Wednesday, September 21, 2011

Leucistic Gray Catbird

Leucism is characterized by reduced pigmentation in animals.  Unlike albinism, leucism is caused by a reduction in all types of skin pigment, not just melanin (Wikipedia).  Leucistic animals usually have normal-colored eyes; albinos' eyes often are pink. Frequently, like in this catbird, with its white throat and bill tip, leucism is patchy, resulting in regular-colored animals with patches of white. This condition is called partial luecism. I banded and released this Gray Catbird near Northfield on 19 September 2011.


  1. I just wrote about one of these guys I had in my yard in Maine a couple of summers ago (, so cool to see you had one too!

    Happy birding!

  2. Thought you might like to see the one we had hanging around this past autumn;

    Greg Miller