Date: 2/1/18 9:22 am From: Carl Lundblad <carl.lundblad...> Subject: Re: [AZNMbirds] Is the Patagonia Red-breasted Sapsucker a hybrid?
There is a long history of hybrid Red-breasted X Red-naped Sapsuckers occurring in southeastern Arizona, and hybrids should always be considered when encountering red-breasted like sapsuckers outside of their breeding range. Most (or all) of the previous Red-breasted Sapsuckers from Arizona have been of the southern race, daggetti, which has a more intermediate face pattern than your northern/ssp. ruber birds in central Washington. The more-intermediate face pattern of daggetti indeed makes them tricky to separate from hybrids, but presumptive hybrids usually show some traces of a red-naped's black shield/throat frame on the upper breast. Looking at the various photos of the Patagonia individual that are in eBird, I don't see any of the black on the upper breast, and the face pattern looks pretty typical of a daggetti red-breasted. The black and white patterning on the face in your photo looks a bit more extreme than in many of the other photos, but I would probably attribute that to some combination of the weird angle, weird lighting, and or maybe greater feather-wear compared to earlier in the season. To me, this looks like a very good candidate for a pure southern/daggetti Red-breasted, and Arizona has a very skilled team of eBird reviewers who I'm sure have already carefully considered this question. Other opinions welcome, however. It's not a trivial identification challenge.
Carl Lundblad Moscow, ID
On Thu, Feb 1, 2018 at 8:58 AM, Denny Granstrand <dgranstrand...> wrote:
> I was in Patagonia yesterday and was given directions to the location of > the Red-breasted Sapsucker. I found it quickly and got some photos. It > appears to me that it is a hybrid Red-breasted X Red-naped Sapsucker. The > red on the head is broken up by the face pattern of a RNSA showing through. > A pure RBSA should be a nearly complete red head or with only touches of > black or white around the eye. > > Here is the link to my eBird report from yesterday: > > https://ebird.org/view/checklist/S42390666 > > I live in Yakima, WA. In the forests in Yakima County we frequently see > mixed pairs of RNSA and RBSA. We also see the hybrid offspring regularly. I > have photos of hybrids in the Sapsucker folder on my website: > > http://www.granstrand.net/gallery/album62 > > Some of the hybrid sapsuckers in my photos look just like the one in > Patagonia. > > If you do an eBird search for Red-breasted Sapsucker photos, you will find > quite a few that look like the one in Patagonia. You will notice, though, > most of those photos were taken during the winter. Those birds undoubtedly > were migrants from the sapsucker hybridization zone in the Pacific > Northwest. > > Denny Granstrand > > * * * * * * * * * * * * > Denny Granstrand > Yakima, WA > dgranstrand AT gmail.com > Denny Granstrand's bird photos can be seen at: > > www.granstrand.net/gallery/ > > Home Page: https://list.arizona.edu/sympa/info/aznmbirds > To unsubscribe use the Unsubscribe button on that page. > To view archive: click "Archive" on that page. >