Records Committee
Utah Ornithological Society
   
Status & Comments
Year 2010 (records 31 through 49)

  


  
2010-31 Neotropic Cormorant

Evaluator      
Bob B. 18 Aug 2010 Acc  
Rick F. 23 Aug 2010 Acc Good description
Steve H. 26 Aug 2010 Acc Good description. Photo of very small, long tailed cormorant is consistent with size/shape of Neotropic Cormorant.
Eric H. 26 Sep 2010 Acc Good written descriptions.
Colby N. 18 Aug 2010 Acc Good description
Ron R. 28 Sep 2010 Acc Good description and elimination of double-crested cormorant. Photo of limited value except for size comparison.
Terry S. 16 Aug 2010 Acc  
David W. 26 Aug 2010 Acc Accept all based on comparisons of size & behavior when swimming together.

  
2010-32 Blackpoll Warbler

Evaluator      
Bob B. 5 Sep 2010 Acc Photos are very helpful in what could be a difficult id in these potentially confusing fall warblers
Rick F. 30 Aug 2010 Acc Foot color and primary edging diagnostic
Steve H. 30 Oct 2010 Acc  
Eric H. 26 Sep 2010 Acc  
Colby N. 5 Oct 2010 Acc  
Ron R. 28 Sep 2010 Acc Photos clearly show this species.
Terry S. 28 Sep 2010 Acc This looks good for a Blackpoll Warbler with the yellow throat, split eye ring with a dark loral line extending through the eye, olive yellow back, dark streaking on sides and flanks, distinct undertail with long white undertail coverts with short projection of retricies beyond coverts. also dark wings with two distinct wing bars, long wings with white primary tips, yellowish legs and feet.
Merrill W. 26 Oct 2010 Acc Good description plus adequate photos.
David W. 5 Oct 2010 Acc The writeup portion of this report is very sparse, and doesn't even describe things like the face, but the photos save the record.  The pale legs eliminate similar species.

  

2010-33 Pyrrhuloxia

Evaluator      
Bob B. 7 Oct 2010 Acc Great find
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Oct 2010 Acc Good Description and photos.
Colby N. 5 Oct 2010 Acc Origin could be questionable, but I think between the description, photos and location that this record seems reasonable.
Ron R. 24 Oct 2010 Acc Sufficient description and photos to eliminate female cardinal.
Terry S. 18 Oct 2010 Acc A fabulous record! Great photos a documentation
Merrill W. 26 Oct 2010 Acc Photos very good.  Plus I had the opportunity to see this as well.
David W. 5 Oct 2010 Acc Excelent record & bird.  This bird is quite skulky.

  

2010-34 Red-breasted Sapsucker

Evaluator      
Bob B. 7 Oct 2010 Acc Excellent documentation

2nd round: 

4 Nov 2010 Acc  
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Oct 2010 Acc Good photos

2nd round: 

5 Dec 2010 Acc  
Colby N. 5 Oct 2010 Acc Sufficient photos and written description

2nd round: 

1 Jan 2011 Acc  
Ron R. 24 Oct 2010 Acc Good description and excellent photos clearly show this species. This bird does not appear to have any intermediate characteristics of hybrids.

2nd round: 

5 Nov 2010 Acc I agree with Merrill and Dave that the bird might have evidence of hybridization. Most concerning is that the black on the chest in the midst of the red pattern is where one would expect a hybrid with red-naped or yellow bellied sapsuckers might show dark coloration due to their black bibs. However, I don't see any strong evidence of other characters from the other sapsucker species suggesting that if this bird is a hybrid, it is not a first generaton cross.
Terry S. 18 Oct 2010 Acc Excellent photos and description. I don't see anything that makes me question whether it is a hybrid.

2nd round: 

2 Dec 2010 Acc  
Mark S.     2nd rnd: 5 Jan 2011 Acc Excellent documentation. The big question is if this is a hybrid - always a tough call with this species. Conventional wisdom is that all Red-breasted in our part of the range are hybrids to some degree. The smudge of blackish feathers on the chest suggests some mixed blood, but that conflicts with the facial markings, that are even less hybrid-like than some Red-breasted. It certainly looks to me that, if it is a hybrid, it is overwhelmingly Red-breasted.
Merrill W. 26 Oct 2010 No, ID Looks like it could be a hybrid.  Might consider it after reading and learning from others.

2nd round: 

17 Dec 2010 Acc When I first saw the photos I didn't think they were strong enough evidence of this species, as a result, requested more time to assess other's opinions. Also, I have looked at photos of what hybrids between the Red-breasted and the Red-naped might look like. So now, I am ready to accept this submission as a Red-breasted Sapsucker.
David W. 5 Oct 2010 Acc Very nice photos, especially Jack's.  If this is a hybrid (it does have some dark patches on head, possibly from an incomplete molt), it certainly is mostly Red-breasted.

2nd round: 

8 Nov 2010 Acc  

  

2010-35 Broad-billed Hummingbird

Evaluator      
Bob B. 7 Oct 2010 Acc  
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Oct 2010 Acc Great photos, great bird.
Colby N. 5 Oct 2010 Acc Good photos
Ron R. 24 Oct 2010 Acc Good description safely eliminates other hummingbird species. Photos also helpful.
Terry S. 18 Oct 2010 Acc Great Photos of a very distinctive male
Merrill W. 26 Oct 2010 Acc Photos indisputable.
David W. 5 Oct 2010 Acc Excellent record.  Photos are great.
 

  

2010-36 Lesser Black-backed Gull

Evaluator      
Bob B. 11 Oct 2010 Acc Excellent description and photos. I was concerned about the size of this bird, but I noticed in "Gulls of the Americas" by Howell and Dunn, that the length of this bird may vary from 19.7 inches to 24.3 inches which means some Lesser Black-backed Gulls are considerably larger than California Gulls.

2nd round: 

23 Dec 2010 Acc  

3rd round: 

13 Mar 2011 Acc I am hesitant to vote no on this bird simply because it seems a bit larger than a Lesser Black-backed Gull should be.  Again the authoritative references state that Lesser Black-backed Gulls can actually be considerably bigger than the average California Gull.  If we saw these pictures in isolation from the California Gulls I don't think we would have a problem voting in favor of it.  So I am going to continue to vote yes.
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  

2nd round: 

5 Feb 2011 Acc The bird is a little larger than LBBG I've seen in the US but it is similar to some LBBG I've observed in Europe where there is more variation in size. The long narrow wings in photo C are typical of LBBG.

3rd round: 

27 Feb 2011 Acc The discussion on this record has been interesting and shows that there is still much to be learned about gulls, especially juvenile, first-winter, and hybrid birds. I still feel this is a LBBG, possibly a heuglini which tends to larger and bulkier than other LBBG ssp. I've observed more variation in size among LBBG in Europe than in the U.S.
Eric H. 5 Dec 2010 Acc Interesting Bird
Colby N. 5 Oct 2010 Acc Great photos

2nd round: 

5 Feb 2011 No, ID I'll admit I completely overlooked this record after taking another look at it. I do not think it's a Kelp Gull. As noted by the observer, I just saw many similarly aged birds in Argentina/Chile and none had the amount of white/patterning on the outer retrices that this bird exhibits. I'm somewhat perplexed by the size of the bird and the bill, but I'm not sure it's entirely out of range for LBBG especially for Heuglin's. There is certainly the hybrid combination such as LBBGxHEGU, but I can't find much information about this, and it seems the size of the bird is the only thing that suggests this combo? I almost more wonder if GBBGXHEGU would be more likely to exhibit the characters of this bird. Anyway, I'm voting no given the uncertainty although I still suspect this is a rather large and somewhat abberant LBBG.
Ron R. 24 Oct 2010 No, ID This is a difficult record to review and I am hoping this will undergo a second round. I am voting to not accept this record due to several field marks that are not fully consistent with lesser black-backed gull. These include: body shape that is stocky and not particularly slender; bill that is stubby, thick; short primary projection beyond tail; and size that is significantly larger than California gull. I don't feel the record can completely eliminate Kelp gull (although black on tail is not as extensive in outer rectrices as is normal for this species) and Kelp-herring gull hybrid.

2nd round: 

4 Feb 2011 No, ID While this is a possible, some might argue probable, lesser-black backed gull, I don't feel kelp x herring hybrid can be ruled out. Also, it could be a herring x lesser black backed hybrid given that these hybrids seem to take on more features of LBBG. The size (much larger than California--note California and LBBG are very similar in range with LBBG ranging only an inch larger on both the small and large end), stocky not streamlined shape, short primary projection of wings beyond tail and stubby bill deep at the gonys are all characteristics that are not consistent with a typical LBBG

3rd round: 

12 Mar 2011 No, ID My concerns (and those of others) still make me reluctant to accept this bird. I would reconsider if a subspecies or population could be identified that have the characteristics of this bird.
Terry S. 25 Oct 2010 Acc A very interesting gull and great photos. The bird may well be a Heuglin's Gull with a body more bulky then a typical Lesser Blacked-backed Gull and primary extension not quite as long. From the literature I reviewed The Heuglin's Gull while still considered a race of the Lesser Black-backed Gull is more and more being treated as a separate species primarily because of breeding range.

2nd round: 

4 Jan 2011 Acc The size of the observed gull is larger and bulkier than the other Lesser Black-backed Gulls seen in the state the past few years but still falls within the size range for this species. While a Kelp or Kelp hybrid are remote possibilities,a first cycle Kelp Gull, as pointed out by the observer, would have a more extensive dark tail and by the first spring have darker and more contrasting mantle feathers.

3rd round: 

5 Apr 2011 Acc I appreciate the discussion on the this bird centering around the possible inconsistencies of field marks. I still believe ,however this is a LBBG.
Jack S.        2nd rnd: 5 Feb 2011 No, ID This is another excellent writeup with outstanding photographs. Many individual gulls simply cannot be identified and this may be one of those birds. I'm not accepting this record because of many inconsistent field marks with LBBGs that have already been stated by the original observer and restated by many others in the first round comments. This individual appears too large (larger than associating CAGU), has a relatively short primary projection (this may be complicated by feather moult), is too stocky, has a heavier/larger bill, and a moderate gonydeal angle. All of these field marks are inconsistent with LBBG.

As already discussed the original observer, one cannot absolutely rule out first winter to first summer Kelp Gull (or hybrids already discussed by Ron R). One interesting field mark of this bird is the light colored tip on the bill. This is a noted field mark you can find at the following website.  http://tertial.us/gulls/domi_d.htm. I'm uncertain how significant this field mark is for Kelp Gull.

3rd round: 

9 Apr 2011 No, ID I'm still not certain of this LBBG record. Although it could simply be an aberrant individual, I'm not sufficiently confident to make that judgment.

I still feel that the record ID is not resolved however and it should be archived at mimimum and possibly reevaluated if additional evidence merits.

I would also be satisfied if two or more LBBG experts (likely Europeans, who observe hundreds/thousands of individuals of this species and the different subspecies) could provide their opinions.
Merrill W.  2nd rnd: 17 Dec 2010 Acc  

3rd round: 

12 Mar 2011 Acc  
Mark S.     2nd rnd: 8 Feb 2011 No, ID I'm going to vote "no" on this record because of the many inconsistencies previously noted by the observer and other committee members. The size, shape (bulkiness, shortish wings, etc.), and bill shape (short and thick, with a pronounced gonydial angle) just don't seem right for Lesser Black-backed to me. 

I'm not sure what i.d. best fits this bird, and perhaps there isn't any i.d. that can be assigned with confidence, in spite of the excellent photos and write-up. Being a gull, the "H" question can't be ignored, either, and perhaps that's the best answer for this bird.

3rd round: 

16 Apr 2011 No, ID I still don't feel comfortable with the i.d. of this bird, therefore I'll keep my "no" vote. I don't have a good alternative, though I think several hybrids are possible - I like Colby's GBBGxHEGU idea, and could see WEGU as a possible parent. I also like Jack's idea of archiving this record, in case we get any additional information that might shed light on this mystery.
David W. 2 Dec 2010 No, ID I find it difficult to vote to accept this record when the observer himself has such reservations based on a significant size discrepancy.

In a whimsical manner, I wonder about the observer's elimination of Kelp gull partly based on how that species' molt should be progressing by spring. Does that line of reasoning take into account the southern hemisphere range of most Kelp gulls? Whose "spring" are we talking about?

  

2010-37 McCown's Longspur

Evaluator      
Bob B. 11 Oct 2010 Acc  
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Oct 2010 Acc  
Colby N. 4 Dec 2010 Acc good photos
Ron R. 24 Oct 2010 Acc Good description and photo (upper) sufficient to eliminate other longspurs.
Terry S. 18 Oct 2010 Acc  
David W. 5 Oct 2010 Acc  

  

2010-38 Yellow-billed Loon

Evaluator      
Bob B. 11 Oct 2010 Acc Excellent photos and description
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Oct 2010 Acc  
Colby N. 5 Oct 2010 Acc Great photos
Ron R. 24 Oct 2010 Acc Good description and excellent photos eliminate other loons.
Terry S. 18 Oct 2010 Acc Great Photos!
David W. 5 Oct 2010 Acc Spectacularly crisp photos show bill shape and color, plus the distinctive head shape and back pattern.

  

2010-39 Prothonotary Warbler

Evaluator      
Bob B. 12 Oct 2010 Acc The description was good, but the photo was worth a thousand words
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 21 Oct 2010 Acc  
Colby N. 5 Oct 2010 Acc Good photo
Ron R. 24 Oct 2010 Acc Photo clearly shows this distinctive species.
Terry S. 25 Oct 2010 Acc Good photo
David W. 5 Oct 2010 Acc Another fine record.

  

2010-40 Western Gull

Evaluator      
Bob B. 12 Oct 2010 Acc Photos and description are sufficient to rule Slaty-backed and Yellow-footed Gull. Actually very good photos.
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Dec 2010 Acc  
Colby N. 4 Dec 2010 Acc sufficient photos
Ron R. 25 Oct 2010 Acc Good description and photos. Most convincing to separate from very similar slaty-backed gull were the yellow orbital ring and the lack of streaking on the head and back of the neck (basic plumage).
Terry S. 25 Oct 2010 Acc Good photos of an adult Western Gull.
David W. 8 Nov 2010 Acc Good photos & writeup.

 

2010-41 Lesser Black-backed Gull

Evaluator      
Bob B. 25 Oct 2010 Acc Good description and photos. I am a bit surprised that essentially all the head and neck streaking is gone on this bird at this date.
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Dec 2010 Acc  
Colby N. 4 Dec 2010 Acc  
Ron R. 24 Oct 2010 Acc Description and photos safely eliminate other gull species. Size comparison most helpful.
Terry S. 25 Oct 2010 Acc Good photos distinguishing an adult Lesser Black-backed Gull
David W. 8 Nov 2010 Acc Interesting that this bird is already almost completely in breeding plumage, with almost no dark streaking on its head.

  

2010-42 Iceland Gull

Evaluator      
Bob B. 19 Oct 2010 Acc I would wonder if the bicolored billed bird might not be a true Iceland, and not a Kumlien  Gull, but would agree these are both in the Iceland/Kumlien complex.

2nd round: 

18 Jan 2011 Acc  

3rd round: 

13 Mar2011 No, ID I have changed my vote only because I too feel it would be best to divide this into to separate reports and then revote.
Rick F.   (abst)  

2nd round: 

  (abst)  

3rd round: 

  (abst)  
Steve H. 30 Oct 2010 Acc  

2nd round: 

 5 Feb 2011 Acc I'm voting to accept the bird in photo A. I would like to vote on the other bird separately.
Eric H. 5 Dec 2010 Acc  
Colby N. 23 Dec 2010 Acc I hesitate on both, but will vote yes for now...I'm somewhat concerned that the bicolored bill bird could be a small glaucous gull, but the other one appears more like a 'typical' kumliens...except for the somewhat bulkier bill which gives me pause

2nd round: 

5 Feb 2011 No, ID While I think the right bird is still an Iceland Gull (after doing more research is it a candidate for nominate glaucoides?), I do think either a better written description or additional photos are necessary for the left most bird to be accepted. While the bill size/shape gives me pause, I'm not sure it's out of range for Kumlein's. However, the head shape gives me even more concern after looking at this record again. Either more details describing in the individuals (rather than referring to both birds as the appear quite different in the one photo presented) is necessary or additional photos are needed to accept both birds.
Ron R. 19 Oct 2010 No, ID I would like to see this record split into two records--one for each bird. I don't feel there is sufficient support for the darker bird being an Iceland gull. As compared to the light individual, the darker bird is slightly larger, has a larger, less rounded head and there was not sufficient observation of the primaries to rule out a light Thayer's gull or a Thayer's x Iceland hybrid. I feel the description and photos of the light individual are sufficient to identify this bird as an Iceland gull. I don't feel the observation was sufficient to determine if the bird was a "Kumlien's" Iceland gull (primary pattern was not detailed).

2nd round: 

4 Feb 2011 No, ID I am still voting to not accept this record unless the two individuals are submitted separately. I don't feel the darker individual is an Iceland gull.

[If the record is accepted as submitted, both individuals are deemed to be accepted as I understand our current policies--or is this not the case? Do we have a provision to request a separated record when multiple individuals are submitted and one or more does not seem to be a correct ID?]

3rd round: 

26 Apr 2011 No, ID I still feel this record needs to be split for appropriate review.
Terry S. 2 Dec 2010 Acc The smaller bi-colored bill gull shown in the photos looks very good for a Kumlien's Iceland Gull. The description and photo are convincing. I'm not that sure on the other gull showing the dusky markings and all black bill. I really can't see the gull that well on my monitor but from what I can see it reminds me of a pale Thayer's Gull. The head doesn't look as small and round as the other gull and the bill looks relatively larger. The wing tips are pale, however, and seem to extend well beyond the tail which is good for an Iceland Gull. I would like to accept the bi-colored bill gull and hope for some discussion on the all black bill gull. I also wonder if it would help to have separate records submitted for each gull so that we can evaluate them individually.

2nd round: 

4 Jan 2011 Acc I would still like this record split into two records. While I vote to accept one of the the gulls as an Iceland Gull I have reservations over the other gull (larger, all dark bill). Would the observer be willing to submit two records?

3rd round: 

5 Apr 2011 No, ID I'm voting no with the hope this record is resubmitted as two records as suggested by myself and others.

Jack S.    2nd round: 

5 Feb 2011 No, ID I'm voting no because this record needs to be resolved to two separate records. Photograph B should be annotated to clearly identify the bird being judged (an arrow will suffice). I believe the light colored bird is consistent with Iceland Gull while the darker bird is more consistent with a Thayer's Gull.

The lighter bird (photo A, right side B, and C) is the bird that I first discuss. It's size and structure is consistent with Iceland Gull. The bicolored bill on a first winter plumaged bird is more consistent with nominate glaucoides. The extent of white, with sparse brown flecking, from the mantle to the tertials is consistent with kumlein/glaucoides. The primary projection and white primary tips and pink legs are consistent with either forms.

The darker bird is slightly larger, has a less rounded head (more blocky), and a slightly larger and all black bill, and arguably more deep-pink legs. The primary tips are light. These field marks are more consistent with a Thayer's Gull especially in the context of a side-by-side comparison in photograph B.

3rd round: 

9 Apr 2011 No, ID I would prefer if this record was split before voting again.

Mark S.  2nd round: 

17 Feb 2011   Having taken my first look at this record, I would echo the comments of several reviewers that these birds should be treated separately. To be specific, I would vote to accept the right-hand bird as an Iceland (perhaps nominate glaucoides), but I think the left hand bird is probably a pale Thayer's, or at least that the possibility of such can't be eliminated.

3rd round: 

16 Apr 2011 No, ID I'd still like to see this split into two records - my vote stands as before.
Merrill W. 23 Dec 2010 Acc  

2nd round: 

6 Feb 2011 Acc  

3rd round: 

12 Mar2011 Acc  
David W. 6 Dec 2010 Acc I was initially troubled by the dark eye, but after doing a bit of research, I am voting to accept.

 

2010-43 Grasshopper Sparrow

Evaluator      
Bob B. 23 Nov 2010 Acc I believe this is a Grasshopper Sparrow, but am troubled a bit by the head, which doesn't appear nearly as flat as the description would suggest.  Also we cannot see the tail in profile from the photos.  However I don't know what else it could be.
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 5 Dec 2010 Acc  
Colby N. 4 Dec 2010 Acc  
Terry S. 17 Nov 2010 Acc Great Photos
Merrill W. 23 Dec 2010 Acc  
David W. 8 Nov 2010 Acc I am glad the observer noted that the head was flat on this bird, because that was the thing that, on initial glance, made me doubt the ID.  The photos just don't jiz like an Ammodramus to me, but I suspect that the bird is craning its neck and raising its crown feathers in alarm to give it a round-headed appearance.  Certainly the face patern and crown stripe, etc. fit for this species.  Lovely photos.

  

2010-44 Pomarine Jaeger

Evaluator      
Bob B. 7 Oct 2010 Acc Excellent Photos make ID definite
Rick F.   (abst)  
Steve H. 30 Oct 2010 Acc  
Eric H. 21 Oct 2010 Acc Great Photos.
Colby N. 4 Dec 2010 Acc  
Ron R. 24 Oct 2010 Acc Excellent description and photos eliminate other jaegers.
Terry S. 25 Oct 2010 Acc Excellent photos of a distinctive Jaeger.
David W. 8 Nov 2010 Acc Spectacular photos, and the writeup reinforces the key field marks.  Seldom does one get such a convincing record for this oft-confusing genus in Utah.

   

2010-45 Brown Thrasher

Evaluator      
Bob B. 19 Oct 2010 Acc Some yard bird, if it was seen from his yard.  Great find.
Rick F. 17 Oct 2010 Acc Good record
Steve H. 30 Oct 2010 Acc  
Eric H. 21 Oct 2010 Acc Photos show a Brown Thrasher.
Colby N. 4 Dec 2010 Acc  
Ron R. 24 Oct 2010 Acc Photos clearly show this distinctive species.
Terry S. 17 Nov 2010 Acc good photos confirming ID
David W. 8 Nov 2010 Acc Interesting comment about the "phony description."
Not much of use in the writeup, but the call description does match and the photos leave no doubt.

  

2010-46 Harlequin Duck

Evaluator      
Bob B. 4 Nov 2010 Acc Very interesting to see this duck in this location. No question as to the ID.
Rick F. 4 Nov 2010 Acc Incredible record!
Eric H. 5 Dec 2010 Acc  
Colby N. 4 Dec 2010 Acc  
Ron R. 5 Nov 2010 Acc Nice photos clearly show this species.
Terry S. 17 Nov 2010 Acc Great photos.  The only question concerns the possibility of an escapee.
Mark S.. 5 Jan 2011 Acc [Hola amigos, otra vez.]
So I'll be a softy on my first record review and vote to accept (because the photos show a Harlequin Duck). But I see that the digital photo-caused documentation laziness has, if this record is an indication, gotten worse. Without the photos, this record has nothing (never defining what he means by "typical"). On the strength of the photos, I'll accept, with a reprimand for not really providing written documentation.
Merrill W. 23 Dec 2010 Acc  
David W. 4 Nov 2010 Acc The written description is almost charmingly useless, but the photos are superb and tell the story.

 

2010-47 Red-necked Grebe

Evaluator      
Bob B. 14 Nov 2010 Acc  
Rick F. 5 Nov 2010 Acc Well-documented record.
Eric H.   abst  
Colby N. 4 Dec 2010 Acc  
Ron R. 5 Nov 2010 Acc Nice description and adequate photos to ID this species and eliminate others.
Terry S. 17 Nov 2010 Acc Good photos.
Mark S.. 5 Jan 2011 Acc Excellent documentation. Description and photos all support the identification.
Merrill W. 23 Dec 2010 Acc  
David W. 8 Nov 2010 Acc  

  

2010-48 Purple Sandpiper

Evaluator      
Bob B. 4 Dec 2010 Acc Not only was this an incredible find, but the process of discussing all of the ID points on the internet postings was most educational. Anything can truly show up anywhere.
Rick F.   abst  
Eric H. 5 Dec 2010 Acc  
Colby N. 1 Jan 2011 Acc  
Ron R. 29 Dec 2010 Acc Excellent photos and description are conclusive.
Terry S. 20 Dec 2010 Acc Great discussion and review on Utah Birdnet distinguishing the Purple Sandpiper from a Rock Sandpiper. The observer has sought expert opinion to help in identification. I'm convinced from the review that this is a Purple Sandpiper.
Jack S. 21 Jan 2011 Acc Exemplary write-up and outstanding photographs.

All plumage & bare part coloration field marks are consistent with a first-winter PUSA.

The orange (rather than yellow) color of legs and base of bill is consistent with PUSA. I could find only yellow coloring for these parts in photos published online for ROSA.

The extent and density of dark spotting on the neck and upper chest are consistent with PUSA but also within variation seen in ROSA online photographs. 

PUSA are well-documented wanderers in the interior, at least in the Eastern US, and there are few, if any, inland ROSA records. According to Dennis Paulsen (Curator Slater Museum) there are no inland records of ROSA in the state of Washington. This suggests an inland PUSA to be more likely than ROSA.

All this being considered, I believe the bird is a likely PUSA, but I find it difficult to unambiguously commit to PUSA. I suspect the only confirming tool might be genomic or mitochondrial DNA sequencing.
Merrill W. 23 Dec 2010 Acc  
David W. 2 Dec 2010 Acc Incredible record for so far west. Having seen this bird at three different locations on the reservoir yesterday (at only about 3-4 feet for a while), I am convinced that it is a Purple sandpiper. The observer makes a convincing argument for why it is not a Rock sandpiper.

 

2010-49 Rusty Blackbird

Evaluator      
Bob B. 23 Dec 2010 Acc Excellent description and photo
Rick F. 21 Dec 2010 Acc Nice record
Steve H. 5 Feb 2011 Acc  
Colby N. 5 Feb 2011 Acc Sufficient photos and written description. Behavior is very similar to the Fish Springs bird of a couple years ago.
Ron R. 29 Dec 2010 Acc Good photos and description. The photos suggest the bird may have been a female, not male as noted. The prominent pale supercilium, whitish throat, contrasting grayish rump and overall light rusty coloration (latter best seen in photo B) are more consistent with a female.
Terry S.   (abst)  
Jack S. 9 Jan 2011 Acc  
Mark S. 6 Feb 2011 Acc Nice photos.
Merrill W. 23 Dec 2010 Acc  
David W. 21 Dec 2010 Acc  

  

 


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