Utah Birds Records Committee
  
"Code Categories"
 Discussion
 
  

                                   Checklist Abundance and Status Code Categories

 
    
 
BRYANT'S PROPOSAL  (from his email 4 March 2026):
 

So Here is my proposal: Additions in blue

A=Accidental: Species that are recorded five or fewer times, or fewer than three records in the past 30 years.
 
CA=Casual: Species not recorded annually, but with six or more total records—including three or more in the past 30 years—reflecting some pattern of occurrence, 2-5 per decade
 
O=Occasional: Species not reported annually, average 6-8 per decade
 
R=Rare
 
U=Uncommon
 
C=Common
 
I=Irruptive: Irruptive-present some years, but absent or scarce other years
 
X=Extirpated

Bryant's Original email  from  4 March 2026

Sorry for the late reply everyone. So again let me go over the new codes and why I think we need them
 
My 1st issue is with our use of the term Accidental on the checklist. We've been using that term rather loosely  as a catch all for many  review species, but since this term is widely used by the ABA, if were going to use that term we need to follow their definition IMO which is
 
Accidental. Species that are recorded five or fewer times in the Area, or fewer than three records in the past 30 years.
 
This comes down to an average of less than 1 a decade.
 
ABA has a Casual code for birds that are less than annual but more than 1 per decade.
 
Casual. Species not recorded annually in the Area, but with six or more total records—including three or more in the past 30 years—reflecting some pattern of occurrence
 
Our current usage we are calling many birds that are Casual as Accidental, which is misleading, and using Occasional to partially fill the Casual term
 
We could just continue to use Occasional as a synonym Casual, however many birds on our list that are currently listed as Accidental are by ABA Definition Casual.
 
Example: We list all 3 Jaeger species as Accidental. That implies they all are seen less than 1 per decade and are all equally unlikely therefore. However if you actually look at the records they tell a different story:
 
Parasitic: Reported annually the past 7 years, and over 20 in the past decade. There actual status should be Rare, expected annually 
 
Long-tailed-reported every year the past 5 years, and 9 total in the past 10 years. Actual status is Occasional, reported most years but not annual
 
Pomarine-4 in the past 10 years, 7 in the past 30 years. That is not even Accidental, that would be Casual by ABA Definition
 
Jaegers are not all equally unlikely, Parasitic is the most expected, but there are enough Long-tailed records you have to be certain of the ID to make sure. Pomarine should only be considered if the other 2 can be ruled out without a doubt. 
 
I'm hoping people will actually use the checklist as a guide to help them understand the likelihood, but as it is now it's just saying, all Jaegers are equally out of range here, which isn't true or helpful. That's why I think we need more codes with actual definitions, to help people understand the likelihood
 
So here is my proposal: Additions in blue
 
A=Accidental: Species that are recorded five or fewer times, or fewer than three records in the past 30 years.
 
CA=Casual: Species not recorded annually, but with six or more total records—including three or more in the past 30 years—reflecting some pattern of occurrence, 2-5 per decade
 
O=Occasional: Species not reported annually, average 6-8 per decade
 
R=Rare
 
U=Uncommon
 
C=Common
 
I=Irruptive: Irruptive-present some years, but absent or scarce other years
 
X=Extirpated

 
Irruptive is a commonly used term in many books and checklists, and helps observers understand why some year they are all over the place and common, but other years they are not present. AKA Short-eared Owls, Redpolls, Bohemian Waxwing

X=Extirpated. All the checklists Milt sent us have the X code, so it's normal practice for BRC to publish that I might expand on that to include XN, which would mean formerly nested but now no longer nesting. Veery is a great example, old records indicate they once were a common nesting bird in the Wasatch and Uintas, but last nesting record was in the 90's and now they are Casual or Accidental here, that's a big change in status and something we need to track and note. They still nest in ID,WY and CO.
 
Most Records Committees review Accidental and Casual species in their states.
 
Here's the link again to the document with updates
 

 
 

Discussion & Vote procedure:

Vernon's email form March 10th:

RESULTS OF THE VOTE ON THE CHECKLIST UPDATE

The Committee voted to consider changes to the Checklist Codes:

  • 6 - Consider code changes
  • 1 - Keep the codes
  • 2 - Did not vote

According the bylaws, "Changes to the checklist may be proposed by any Member of the Committee" and "Proposed changes will be voted on by the Voting Members and accepted by majority vote."

(See Bryant's proposal above -  from his email 4 March 2026)

During the recent vote, I received some feedback related to Bryant's proposal: (1) "I think people will be confused by additional codes." (2) "I believe that adding more codes will get confusing for regular checklist users.

PLAN

What I would like to do is open this up for discussion by Committee Members. The plan is to vote on the changes within two weeks on 24 March 2026. Please ask questions, clarify, recommend modifications, or to make an alternate proposal. However, if anyone has new proposals, please propose them in the first week to allow time for discussion. During the second week as we get closer to the vote, I will present the option or options for the Committee to vote on. So, expect another email before the vote.

Thanks all for your involvement, and for your patience with this lengthy email. 

Vernon

   


DISCUSSION:  (From latest comments to earlier comments)
                                           
(Seethe  proposal at the top of this page)
 

Kevin Wheeler email  from:16 March

I tend to lean more toward Vernon's thoughts on the checklist; that it
should be kept simple for birders of any level to understand and use. It is
just a checklist. Bryant is correct in saying it needs to be accurate and
useful and I support any effort to do that.
 
I do think, though, that some of Bryant's ideas exceed the scope of a
checklist's purpose. These include different groupings of frequency
occurrence. Experienced birders should expect to look for this information
on ebird or other sources (Utah Birds website, breeding bird atlas, "where
to find birds" books, etc). I note that some other states' checklists
merely list whether a species is a review species or not, without denoting
anything about frequency or abundance (and have not even attempted to
include seasonality or specific geographical areas as Utah has). This
includes birdy states like California:
https://www.californiabirds.org/checklist.asp, Florida:
https://fosbirds.org/fos-bird-checklist/, Texas:
https://www.texasbirdrecordscommittee.org/texas-state-list, and Arizona:
https://arizonabirdcommittee.org/ABC/lists/state_list_2024.html. Other
states, including Nevada: https://www.gbbo.org/nevada-state-checklist and
Washington: https://wos.org/records/checklist/ merely have a list of birds.
While it would be great if someone published detailed accounts of each
common or rare species, including when and where to find them in Utah, that
information would likely become outdated quickly.
 
Hence my vote to keep it simple.
Kevin


Vernon White email  from March 11

I am not a voting member of the Records Committee and I can't make a
proposal to vote on, but I will take advantage of my access to the
Committee to express some thoughts about the codes. The first thing that
struck me about being involved the URBC is that the Committee owns
itself, owns the checklist, owns the review list, and the whole process
of review. You answer to nobody else. Even stranger, each state has a
committee that does it's own thing in their own way. This Committee can
do whatever it decides, even as far as altering its own bylaws.
 
The second thing I see is the wonderfully "nerdy" passion the Committee
members have for the actual process and science of identifying rare
birds. That focus is exactly as it should be. You all would be a lot
more eager to chime in if confronted with a photo of a Red-flanked
Bluetail than with changing codes on a checklist. So as an average
(mediocre) birder, I'll try to make a few points trying to persuade the
Committee to a simpler, more practical checklist.
 
* CHECKLISTS as in the folded pieces of paper we kept in our pockets,
crammed with every species in the state, are now largely historical.
But they WERE very cool. Space on that page was a premium and we
used single letter codes to inform birders in the field about the
probability of seeing that bird in our state. It is rare now to find
a checklist in anyone's pocket, but birders of every stage, beginner
to expert, now "connect" and "click" their way to lists.
* WHO IS THE AUDIENCE for the Checklist? For beginners and most
birders, the single-letter codes that represent vague separations in
the abundance of rare birds are overwhelming and maybe
"off-putting."  Increasing the categories will be even more
confusing. I would argue for fewer categories rather than more. With
online lists, we have space for a short word, and we don't have to
"stick to" single letter codes.
* COMMON, I like this category. Its intuitive and useful. If I see a
bird that is anything other than common, I will take a second more
critical look.
* UNCOMMON. I don't like this category because it is rarely useful
unless qualified (as with the ABA Code-2) as "restricted range" (for
example Washington County), "low density," "secretive," or
inaccessible habitat. Those are useful facts, but more for someone
seeking out a specific bird, than someone keeping a list of birds
they saw.
* RARE. Meaning seen annually but in low numbers. I like this
category. Everyone gets excited by a rare sighting. Identifying a
rare bird make birding funner.
* STATUS CODES of Permanent (P), Summer (S), Winter (W), and Migrant
(M) are useful Codes although they make the make the list harder to
read when the the seasonal populations vary.
* OCCASIONAL, CASUAL, ACCIDENTAL, and IRRUPTIVE. As an average birder,
I find these codes more distracting than helpful. Only Accidental
has an intuitive meaning. Used here, these are esoteric categories
for different levels of rareness, they are typically only useful to
expert birders who are seeking out birds that have been reported by
others. I would eliminate them all.
* REVIEW LIST. It is an absolute requirement that the State and the
Committee have a list of birds that should be reviewed. The list
should clearly indicate and encourage reporting of appropriate
species. With review birds I would leave off the seasonal codes. We
have the data on accepted sightings, and we have space on checklists
to include a numerical number per time period on the list without
resorting to a code. For example, the American Black Duck could be
identified as "Rev (12 since 1938)" or "Review (12 in 88yr)."
 
I can't propose a change, but here I go. My recommendation would be like
this:
 
* Leave P, S, W, M Codes, or just use permanent, summer, winter, migrant
* Common
* Rare
* Review - with data in parentheses as above updated at least yearly.
 
So a random section of the list might look like this:
 
* Mallard                           Common Permanent
* Mexican Duck                Review (14 since 2018)
* American Black Duck   Review (12 since 1938)
* Northern Pintail            Common Summer, Rare Winter
* Green-winged Teal       Common Permanent
* Canvasback                   Common Migrant, Rare Summer & Winter
 ...

Vernon


Bryant: (11 Feb 2026)

Vernon et al
I started birding in the analog age before the internet and I had a couple books that I always cross referenced and maked up with my sightings and had a copy of a 4 cassette tapes series, 'Stoke's Birds calls of North America' which I would listen to to learn bird calls. When I traveled I collected the local checklist pamphlets at all the NWR, National and State Parks that I visited and read them carefully. All of the codes that I'm proposing were actually inspired by those checklists and I've seen all of them used. It is confusing because every entity seems to have their own terms, but they would usually do a good job keying them out at the top of the checklist to make the checklist useful. I do remember seeing lots of errors, and being the skeptic that I am, I would always cross reference those with range maps in books. Some were great and helpful, others a complete disaster with inaccurate misleading information.

Our job is not just to create a simplified checklist that beginners can understand, but to create an accurate checklist that is useful to people of all different skill levels, and help everyone understand the when, where and likelihood of a species being seen in Utah. With the digital age and eBird, it has revolutionised our understanding of birds, and its become apparent that many species that we once considered one off accidental vagrants actually have a more frequent pattern of occurrence than we thought(Sabine's Gull is a great example) and armed with a little understanding of those patterns, a beginner or intermediate birder can now much more quickly move into the advanced realms of birding. Take MaKay Olson, 2 years ago no one had ever heard of him, but armed with knowledge from our records and eBird ,he suddenly appeared and broke the big year record! That wouldn't have been possible 30 years ago for a beginner to do in 2 years, so we shouldn't assume a beginner is not capable of understanding advanced terms like Accidental, Casual or whatever we chose to use. I do think it is very important we put accurate frequency and seasonal data on the occurrence of birds on our checklist, so that anyone can understand when and where to look for that species, even the vagrants. Birds don't just occur randomly, there is a degree of probability in season and habitat and if that probability can be understood it can greatly increase the likelihood of finding that species again. Today's beginners are tomorrow's voting committee members.

Another big daunting task before us is that we are living in an age of rapid change, the scale of which the world hasn't seen before in any of our lifetimes. Birds are actually better suited for change than most other species but nevertheless many species are showing strong declines and are at risk. I also work with various conservation organizations doing bird monitoring so we can, if nothing else, have strong clear data to track those declines, and to hopefully inform policy decisions. As a committee, it's important we be at the forefront of analysing that data to keep an accurate list of the changing status of birds, and we should expect more birds to go the way of the Inca Dove and we need ways of communicating that changing status to the public at large. So, we should expect frequent revision of the status of birds and need tools to help us do that.

One more thing, I know many of us are very busy with our field season just starting to get going, meaning many of us will have less time to do UBRC work in the next few weeks and months. So I think we will need more time to go over these proposed checklist changes and it may take a few months to get things finalysed. So I'm requesting more time to chew on this, maybe a soft deadline in June?

 


Pre-final proposal discussion:


Bryant: (12 Feb 2026)

Just to give some context, I think it's important we use codes that are understandable and usable to the general public, which is why it is important to define them. Here are ABA definitions:

ABA Code-5 (Accidental) refers to bird species with five or fewer total records in the American Birding Association (ABA) Area, or fewer than three records within the past 30 years

ABA Code 4 (Casual) designates bird species not recorded annually in the ABA Area, typically with six or more total records and at least three in the past 30 years.

ABA has no "Occasional" code, however I think it's useful to say less expectional than Casual, but still not seen every year. Such as Black-and-white Warbler.

It seems we were using Accidental to also refer to Casual, by ABA definitions.

It is a soft line between rare and uncommon, and between uncommon and common. There are many shades of gray and I personally use finer scale terms like

Very Rare
Rare
Fairly Rare
Very Uncommon
Locally uncommon
Generally Uncommon
Somewhat uncommon
fairly common
Locally common
Generally common
Abundant

But I don't think we need to do that. But a definition of what is "Rare" and what is "Uncommon" is needed, which is where the "no more than ten per year" came from to draw that line, but open to discussion on that.If a bird is resident and present, but hard to find like many owls, rails or Ptarmigan, I think Uncommon works better than Rare, rare implies a degree of randomness and uncertainty, rather than just difficult to detect.

As far as seasonal status. eBird has increased the data and reportes exponentially, and our climate is changing rapidly, and bird populations are adjusting accordingly, and many of my changes reflect that. But it's meant to be a working document, please add your edits in your own color and eventually we can get a point to vote on it

I added a column for original status and a column for notes on status so we can explain why the change in status


Milt - (12 Fec 2026)

It looks like we're going to have to decide on the codes (Status and abundance), before we start suggesting changes in the codes on the checklist.

 
I checked out Bryant's suggestions and find that we would have 3 abundance codes that would all be applicable for species on the Review List.  (O, L and A).  We do have actual numbers of sightings we've documented for these species, but it doesn't make much sense to split that finely for those records, as far as I'm concerned.  Out "general" rule for Review Species it less than 20 sighting in the previous 10 years ("average two or fewer times per year in each of the ten years immediately preceding revision of the Review List"). Almost all of the Review Species on our checklist are designated as "A"  (Which would mean "Less than 1 reported in a 10 year period, or less than 5 in the past 50 years",  if the new designation were to be adopted. (We'd certainly have to change those designations -- we've documented those sightings).  
 
The problem with putting numbers of sightings  per period, on the checklist is that they would vary in meaning with the difficulty in locating and in ID'ing each individual species.  That's why the "in general" is in the bylaws for the "suggested line" for review species, is on there, I believe.

I also notice the Passenger Pigeon is suggested to be put on the list and put in the "X" category (extirpated).  Since this species hasn't been around for about 120 years, it doesn't seem logical to put it on a list of birds you might see in Utah, to me.  We do have an Auxiliary list were we put species that are in "unusal" categories.  That might be a better place for a species like the Passenger Pigeon.  The other species suggested for the "X" category don't seem to fit "extirpated" to me. American Black Duck, Whooping Crane and LeConte's Thrasher seem to me to be species that were either introduced or present in small numbers and weren't able to establish a viable population.  This too could be indicated on the "Auxiliary List.

If I sound like I think I know what I'm saying, excuse my impudence :-)  I've been on every committee to update out checklist codes in the last 26 years -- I've been rubbing shoulders with the "experts," at least, and think maybe something rubbed off. :-)
 
Anyway, we need to decide on the codes we want, before we go on to making changes on them.  That's my webmaster opinion :-)  and I'm happy that we have interest in doing a good job on our checklist.  

 
Bryant: (12 Feb 2026)
I'll just comment on the X code first. I think it's extremely important we document extirpated species. The case of the Inca Dove is a great example. They have been declining for years and may have just gone over the edge with no reports in 3 years. There are 2 levels of extirpation, 1 when a species that nests here no longer does so and only occurs as a vagrant, and 2 when its completely gone. American Redstarts, Veery, Trumpeter Swan, Mountain Plover, Common Gallinule and some others used to nest in Utah, but no longer do. That is a huge change in that species status in the state. Most of those now only occur now as rare to accidental vagrants. Maybe we will see an occasional Inca Dove wander into Utah from AZ or NV(they are not doing great there either), but they appear to be functional extirpated as a nesting species which is a big change in their status from just a few years ago. We have some more on the verge of that, Gunnison Sage-Grouse, YB Cuckoo are barely hanging on, Grasshopper Sparrow is quickly heading in that direction. Just delegating all those to an auxiliary list when they're gone and not explaining what happened make no sense to me at all and raises the question why are we even documenting anything? If we are not trying to educate, inform and advocate for Bird Conservation then all the work we do seems pointless.