Date: 9/2/20 12:43 pm
From: Wayne Hoffman <whoffman...>
Subject: [obol] Re: Summer Lake Hawk
Hi -

I agree with the ID as Red-shouldered Hawk, but this brings up another, somewhat complicated question: Is this a west-coast Red-shoulder (subspecies elegans) or a vagrant from east of the Rockies? Subspecies lineatus breeds west to Minnesota and probably the Dakotas, so is less likely as a vagrant to the west coast than Broad-winged Hawk, which breeds west into interior British Columbia, but I believe California has at least one record.

I bring this up because these photos seem to look a bit more like the latter.


From: <brrobb...>
To: "obol" <obol...>
Sent: Wednesday, September 2, 2020 1:04:07 PM
Subject: [obol] Summer Lake Hawk

Thanks to all who have responded to my question privately or via OBOL. The consensus is that this bird is an immature Red-shouldered Hawk. In addition to the OBOL responses, other thoughts included:

The amount of dark mottling/barring below seems excessive for a young Broad-winged. Further, all the white barring in the folded secondaries is a better fit for Red-shouldered as is the mostly dark head. Another feature that almost always points to Red-shouldered is the comparative width of the dark and light tail bands. On Red-shouldered the dark bands are typically noticeably wider than the light bands.

Broad-winged never has pale spots on the secondary wing feathers, whereas Red-shouldered always has those pale spots.

Thanks very much for your thoughts and expertise.



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