Subject: LATE BLACK-THROATED GRAY WARBLERS
Date: Nov 13 12:24:08 2001
From: Mike Patterson - celata at pacifier.com
This runs reasonably close to final detection data from
the Columbia River Estuary. I expect to see a few more
to mid-October perhaps, but November is way late.
Mike Patterson wrote:
>
> Tweeters,
>
> To put Michael Hobbs' late BLACK-THROATED GRAY WARBLER in perspective,
> the following fall departure data for Vancouver, B.C. may be of
> interest.
>
> I have fall departure date for this species for 21 years between 1968
> and 1993. The earliest departure data was September 11; the mean was
> September 25, and the latest ever was October 13 (1974). Of the 21
> departure dates, 16 were in September and 5 were in early October.
>
> There is one well-documented winter record for the Vancouver area: a
> bird seen during Christmas Count week in December, 1987 in North
> Vancouver by Doug Brown. (It would take me some hunting to find the
> exact date.)
>
> In short, any sighting of Black-throated Gray Warbler after the end of
> September is unusual at Vancouver, and any sighting after mid-October
> is highly unusual. The same is probably true in the Seattle area. This
> is in sharp contrast to the closely-related Townsend's Warbler, which
> winters regularly in small numbers in most of western Washington and
> southwestern B.C.
>
> Wayne C. Weber
> Kamloops and Delta, BC
> contopus at home.com
>
> --
> Mike Patterson When I despair, I remember
> Astoria, OR that all through history
> celata at pacifier.com the way of truth and love have always won.
> There have been tyrants, and murderers,
> and for a time they can seem invincible,
> but in the end they always fall.
> Think of it...always.
> - Mahatma Gandhi
>
> http://www.pacifier.com/~mpatters/bird/bird.html
--
Mike Patterson When I despair, I remember
Astoria, OR that all through history
celata at pacifier.com the way of truth and love have always won.
There have been tyrants, and murderers,
and for a time they can seem invincible,
but in the end they always fall.
Think of it...always.
- Mahatma Gandhi
http://www.pacifier.com/~mpatters/bird/bird.html