Subject: Re: "Myrtle" warblers in migration
Date: Apr 25 13:39:55 1994
From: Mike Patterson - mpatters at ednet1.osl.or.gov




>
>I had four bright male "Myrtle" warblers in Bellingham this morning. They were
>singing quite a different song than the more common "Audubons". These are the
>first Myrtles i have seen this year. I know that they winter farther south but
>does anyone know if they are common during Spring migration in western Washing-
>ton?
>
>Clark Blake, Dept. of geology, WWU, Bellingham, WA 206-650-3595
>
>

Spring mist netting at the South Jetty of the Columbia River usually produces
about a 50/50 ratio MYWA to AUWA. These are invariably caught in April, no
Yellow-rump types are caught in May and June.
Relative to song, I used to think I could tell them apart, but I now believe
the songs to be highly variable especially in migration and that they may
imitate one another. AUWA is fairly consistant on its breeding grounds in
the Cascades, however.



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Mike Patterson, Astoria, OR
mpatters at ednet1.osl.or.gov
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