[Tweeters] Williamson's Sapsucker -- abnormal plumage one side

Loren Mooney loren.mooney at gmail.com
Fri Mar 4 21:15:38 PST 2016

I think it might be a male/female chimaera.

On Fri, Mar 4, 2016 at 8:55 PM, Kevin Lucas <vikingcove at gmail.com> wrote:

> Williamson's Sapsucker half-normal plumage


> My reward for a nice long hike in the snow today was a Williamson's

> Sapsucker (WISA) that had yellow only on the left side of its breast. On

> its center and right breast were black and white markings -- not the black

> with white wisps I usually see on adult males' breast sides. Its

> vocalizations and drumming were typical for WISA, and it was calling and

> drumming with two or maybe three other WISA. In March of previous years

> I've photographed WISA with unusual black markings in what is usually a

> solid white wing patch, but this seems like something different is

> happening -- where plumage on just one side is wacky.


> Can anyone provide me with information on what causes this one side color

> abnormality, and whether there's a term for it? So far my Google searches

> have landed on albinism and leucism. Maybe it has something to do with

> hybridization.


> I posted a still image frame capture from a movie, along with a movie in

> which you can hear the characteristic WISA drumming. I apologize for the

> image shake (superzoom hand held in the cold).

> Here are links to the still photo

> https://www.flickr.com/photos/58148027@N07/25397070352/in/dateposted/

> and to the movie clip

> https://www.flickr.com/photos/58148027@N07/25148050649/in/photostream/

> on my Flickr photostream.


> Thanks,

> Kevin Lucas

> Selah, WA


> <a href="https://www.aba.org/about/ethics.html" rel="nofollow">Birding

> Ethics</a>


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Loren Mooney
https://www.flickr.com/photos/loren-mooney/ <http://www.mooneyimages.com>
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