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Leucism (occasionally spelled leukism) is a general term for the phenotype resulting from defects in pigment cell differentiation and/or migration from the neural crest to skin, hair or feathers during development. This results in either the entire surface (if all pigment cells fail to develop) or patches of body surface (if only a subset are defective) having a lack of cells capable of making pigment.
If you look at the crown/nape of this guys head (best represented in the first photo), you can see a dark pigmented area. Also, there is only 1 tail feather that is red (best represented in the 3rd photo), which is why I know its a red-tailed hawk. I know he is a "he" only because I saw him mating, so it was obvious he was a boy. I have photo'd him for more than 6 years so I fear his life left on earth won't be long, so every opportunity I get, I put in plenty of wait time in the field, because he is definately worth the patience it takes.
You can see other shots I've taken, by checking my labels for "white hawk" found on the right side of the template.
10 comments:
Wow! I have lost the words about these Photos. Really wonderful. Lots greetings from Germany
What an unusual sighting. Patience you got to get these!
Amazing bird.What a rare opportunity to capture a bird like this.
He's so beautiful! Amazing photos you have here. Very nice work.
I'm glad I found your blog... I am in LOVE with your photo's. You are doing exactally what I want to do.
Wow that's indeed very impressive to see white!!! We are time to time getting white morph of gyr falcon over here!
Very cool to get such good photos of this one. Enjoyed them very much.
Incredible! Truly a unique bird. From what I found red-tailed hawks can live up to 20 years with an average lifespan of 12-15 do with a little luck you may have him around for a number of years yet.
You are finding so many unique subjects, and you know how to photograph them to best effect.
Amazing photos. The power in his body is breath taking.
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