As for migrants, look at a distribution map of SWTH and it shows the forests of
western Oregon as a minuscule part of the species' breeding range. The forests
of BC and Alaska must contribute the lion's share of what we hear in the night.
The low visual detection rate that Robert and l are reporting opposed to the
high one Darrel and Roy experience says a great deal about time budget/
lifestyle of the human observers and much less about those of the thrushes. My
birding efforts at home are passive to the extreme. The further from home l
get, the more extreme my effort.Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Darrel Faxon <t4c1x@xxxxxxxx> Date:
12/18/21 1:27 AM (GMT-08:00) To: romain <romain@xxxxxxxxxxxxxxx> Cc:
larspernorgren <larspernorgren@xxxxxxxxx>, obol <obol@xxxxxxxxxxxxx> Subject:
[obol] Re: Shy thrushes From this report and that of Bob O'Brien, I arrive at
the same long held suspicion, namely, that Swainson's Thrush are far more
common in the Coast Range, than anywhere else in the state. Suspicion also
based on the paltry number of migrant birds reported passing over at night in
the fall at other locations, compared to thousands going over the western slope
of the Coast Range. Concur with assessment of Roy Gerig in separate
post.DarrelFrom: "romain" <romain@xxxxxxxxxxxxxxx>To: "larspernorgren"
<larspernorgren@xxxxxxxxx>, "obol" <obol@xxxxxxxxxxxxx>Sent: Friday, December
17, 2021 7:12:15 PMSubject: [obol] Re: Shy thrushesAs easy to see as "our"
(state of Oregon)
wintering Hermit Thrush are, not so easy to "observe" HETH
during the Oregon breeding season. And, in habitat, HETH are common
and easy to here. Not unlike Swainson's Thrush in that respect.
At 05:28 PM 12/17/2021, larspernorgren wrote:
I concur with Robert. SWTH is
probably the commonest breeding bird at my home in the Coast Range, but l
seldom see them. I think the data in David Bailey's master's thesis
showed them to be the commonest breeding bird on public greenspace in
Portland, but l imagine most human residents could spend three score
years and ten here without seeing one.
Sent from my Verizon, Samsung Galaxy smartphone
Romain Cooper
10398 Takilma Road
Cave Junction, OR 97523
541-592-2311
