A very interesting and unusual looking bird. However, I would not call this leucistic as there are no areas that show a complete lack of pigment. This is clearly what is technically known as a dilution. It is caused by one or a number of genes that deposit melanin in a lower than normal concentration.
Peter Post Sent from my iPhone > On Apr 24, 2016, at 3:22 PM, Anders Peltomaa <[email protected]> > wrote: > > Hi all, > Yesterday, I and many other birders saw this exceptional Hermit thrush in > Central Park. None in my group had ever seen anything like it, and some in > the group have 50+ years of birding experience so calling it exceptional is > not an exaggeration. > > Photo by visiting French birder Hubert Pottiau. > > > https://flic.kr/p/GsFaeD > > good birding, > > Anders Peltomaa > Mannahatta > -- > NYSbirds-L List Info: > Welcome and Basics > Rules and Information > Subscribe, Configuration and Leave > Archives: > The Mail Archive > Surfbirds > BirdingOnThe.Net > Please submit your observations to eBird! > -- -- NYSbirds-L List Info: http://www.NortheastBirding.com/NYSbirdsWELCOME http://www.NortheastBirding.com/NYSbirdsRULES http://www.NortheastBirding.com/NYSbirdsSubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/[email protected]/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NYSBirds-L 3) http://birdingonthe.net/mailinglists/NYSB.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --
