Collecting Experiments Science Webinar 
10,000 Birds
APRIL 5, 2022
Less and Gilroy sort through the exogenous (external) and endogenous (internal) factors thought to cause vagrancy and the scientific experiments that have sought to prove their significance with patience and plain language as well as charts and photographs. It’s not always easy reading.
10,000 Birds
APRIL 4, 2023
This is more than a collection of species accounts. ” They conclude that many non-vocalizing Empidonax flycatchers can be identified in the field, but only “when several field characters are used in combination–and after one has gained experience in looking at these characters on singing/calling and captive birds (i.e.,
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