web analytics

Posts Tagged "leucism"

Leucistic Yellow-rumped Warbler

Posted on May 9, 2016

Leucistic Yellow-rumped Warbler

Here is that unique Yellow-rumped Warbler which I mentioned in a previous post. Can you see what looks different about it? I noticed it naked eye while tracking various subjects in a loose flock through the trees last week including more Yellow-rumps, Black-and-white Warblers, Blue-headed Vireos, and Blue-gray Gnatcatchers. After I got my binoculars on it I realized this bird was partially leucistic, and I quickly raised my camera to snap off a record photo. Leucism in birds is when melanin pigments are produced at less than normal levels or in an unexpected pattern. In this case many of the...

Read More

Leucistic Savannah Sparrow

Posted on Oct 21, 2015

Leucistic Savannah Sparrow

This appears to be a partially leucistic Savannah Sparrow, a migrant individual that I was surprised by yesterday morning. Leucism is when pigments are produced at less than normal levels or in an unexpected pattern. In this case many of the feathers on the head and throat do not have typical pigmentation. Interestingly the yellow patch on the face can still be seen, giving this unique bird an all the more fascinating look. Scott Kruitbosch Conservation & Outreach Coordinator

Read More