Irridecent Grackle
Jan 29, 2020 08:20:55 #
Chuckwal wrote:
Such
thanks for the help
chuck
thanks for the help
chuck
A FYI.
The colors of a grackle and many other birds is not dyed into the feathers.
It is created by the light being refracted thru structures ON the wings. In dim light it is just blah black.
Same on many beetles. They 'sparkle' in the sun due to the same phenomenon.
Bill
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