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Blue Jay Sunning (with uropygial gland exposed)
Jays | 5 of 19
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# Title Blue Jay Sunning (with uropygial gland exposed) Description A Blue Jay (Cyanocitta cristata) suns itself in a forest in the Blue Ridge Mountains. Note that the bird's uropygial ("preen") gland is exposed. The uropygial gland is found in a majority of bird species. Ornithologists believe the function of the gland varies among species, and postulate several possible functions, including feather and body integrity, courtship and pheromone production, and waterproofing and antimicrobial effects. One study suggests a coevolutionary relationship between gland size and parasite biodiversity. Location and Date McCrae's Meadow Linville, North Carolina, USA 5/25/12 (Note: pre-2000 dates are approximate) Credit Mark Swanson/Swanson Media Camera/Source Nikon D300 DSLR Lens AF VR-Nikkor 80-400mm f/4.5-5.6D ED Model/property releases available? Not applicable/Not applicable Keywords Blue Jay (Cyanocitta cristata), Jays, Family Corvidae, Order Passeriformes, Class Aves (Birds), Kingdom Animalia (Animals) |
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