Date: 9/27/19 4:38 pm
From: Alex Lamoreaux <aslamoreaux...>
Subject: [obol] Re: Those fall kingbirds
Similar to my rant on crossbills yesterday, without vocalizations Tropical
and Couch’s Kingbirds are not identifiable under field conditions. Some
variation in shape of the P4 on adult males, and other subtle in-hand
features can separate them but otherwise they must be recorded as
Tropical/Couch’s until vocals can confirm species. Current eBird records of
this Newport bird make no mention of calls and the records should be
changed to the dreaded ‘slash’.

Tropical has shown a solid pattern of northward movement up the west coast
in fall in recent years (and up the east coast to a lesser extent, with
overwintering in Florida etc) but Couch’s Kingbird has also greatly
increased its US population in the last 10 years and should be expected as
a fall vagrant throughout the country. 4+ have been confirmed by vocals in
the west, and many more in the northeast and Great Lakes.


On Fri, Sep 27, 2019 at 7:26 AM <t4c1x...> wrote:

> Given the extremely remote outside chance one of those fall kingbirds
> could be a Couch's Kingbird (haven't they been recorded in CA.?) does
> anybody in Oregon pay any attention to their vocalizations? I've seen quite
> a few fall Kingbirds, but only one of them ever vocalized, and it gave the
> typical twitter of a Tropical. All the others have been silent. What
> experiences have others had in this regard?
> Darrel
Alex Lamoreaux
Naturalist and Senior Leader/North America Specialist for Wildside Nature

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