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Posts Tagged ‘white winged’

Some very poor photos, at great distances (except the second one where the crow is in a tree), of White Winged Crow near the Ponca, Arkansas on the Buffalo River. These crows are part albino. Leucism, is, unusual plumage condition caused by a genetic mutation that prevents pigment, particularly melanin, from being properly deposited on a bird’s feathers. As a result, the birds do not have the normal, classic plumage colors listed in field guides, and instead the plumage have several color changes. I think they are very handsome birds:

 

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Over near the Ponca Arkansas low water bridge over the Buffalo River, there is a family of crows that always contains a couple to White Winged crows that have Leucism. 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.

These birds are hard to find and photograph; although I did get a parting photograph of the individual with a Canon 7D and a Canon EF 300L f/2.8 IS lens:

 

 

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If you don’t have to get up and go. We got 0.20 since midnight and supposedly more on the way too. Barely hear a bird in the early morning anymore. Their nesting season is drawing to a close for 2013.

Yesterday, I drove to Dixon Ford on the Buffalo River; it is 22 miles above Boxley and just downstream from the two forks that  make it the Buffalo River. It was not dry as I expected, but very low. On the way back I drove up AR 16 to AR 21 to AR 43 and stopped along the Boxley valley\y in several locations. It was a beautiful summer day. I got a photo of a White Winged crow and several Scissor-tailed Flycatchers. The first I have seen a white winged crow since last September. They are  “leucistic”, partially albino. Ive got lots to do today, hope the rain stops for a while.

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Dixon Ford on the Buffalo

Dixon Ford on the Buffalo

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