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Date: 12/30/20 9:00 am From: Bill Bousman <barlowi...> Subject: Re: [southbaybirds] Possible Costa's Hummingbird at Santa Teresa CP (iNaturalist sighting)
Folks: I'm unsure about this bird. The upper half looks good for a male Costa's, but the lower half is typical of Anna's. Notice how the tail projects well beyond the wing tips, whereas in Costa's the wing tips are lined up with the the tail or ever so slightly farther. I would think this is too late in the year for a HY male Anna's not to have replaced all of its gorget (sometimes in their molts, you can see individual feathers like this). There are hybrids, of course, but that is a more difficult ID. Bill Bousman Menlo Park On 12/30/2020 8:13 AM, Brooke Miller via groups.io wrote: > On Dec. 27, an iNat observer found and photographed a hummingbird he > ID’ed as Costa’s. His photo also seems to indicate that it is, as > well. Here’s the observation: > > https://www.inaturalist.org/observations/67161710 > <https://www.inaturalist.org/observations/67161710> > > Brooke Miller > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#23343): https://groups.io/g/southbaybirds/message/23343 Mute This Topic: https://groups.io/mt/79314985/858290 -=-=- Usage Rules and more information about our lists is at: Birdwatching in Silicon Valley (https://siliconvalleybirding.org) Interested in attending events in Santa Clara County? Subscribe to South-Bay-Birds (Events): https://groups.io/g/southbaybirds-events/ Trying to find a location mentioned in SBB? Try this Google Map: https://drive.google.com/open?id=1w39tnsFxYJeIJqYtf774vtuVk0Gz2F9G Please be discreet in disclosing locations of nesting birds. Disclosure of nests for Owls and Raptors is prohibited. -=-=- Group Owner: southbaybirds+<owner...> Unsubscribe: https://groups.io/g/southbaybirds/unsub [<lists...>] -=-=-=-=-=-=-=-=-=-=-=-

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