old nests from nest boxes

["B.Grillenberger" <B dot Grillenberger at rug dot nl>]

Dear Bluebird people,

I am a PhD-student from Groningen University (The
Netherlands) and I am working on a parasitic wasp called
Nasonia. This wasp parasites the pupae of blowflies, that
are feeding on the young nestlings of cavity breeding
birds.
The easiest way to collect Nasonia from the wild is to
search through nests out of which the nestlings have
recently fletched.
For my studies I will be in Utah between the 4th of Juy
and the 16th of July. I would be very happy if some
bluebirder that have nest boxes in the area of Salt Lake
City would get in contact with me.
I am primarily interested in nests from Bluebirds and
Treeswallows, as our experience has shown us, that these
are most promising. I will take great care to not disturb
the birds, and promise to only take nests that have been
abandoned.
Thank you very much for your help !!

Best regards

Bernd

Bernd Grillenberger

b.grillenberger@rug.nl

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