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Grey-headed swamphen : ウィキペディア英語版 | Grey-headed swamphen
Grey-headed swamphen (''Porphyrio poliocephalus'') is a species of swamphen occurring from the Middle East and the Indian subcontinent to southern China and northern Thailand. It previously was considered a subspecies of the purple swamphen, which it resembles, but has cerulean blue scapulars, face throat and breast. The male has an elaborate courtship display, holding water weeds in his bill and bowing to the female with loud chuckles. The grey-headed swamphen was introduced to North America in the late 1990s due to avicultural escapes in the Pembroke Pines, Florida area. State wildlife biologists attempted to eradicate the birds, but they have multiplied and can now be found in many areas of southern Florida. Ornithological authorities consider it likely that the swamphen will become an established part of Florida's avifauna.〔Pranty, Bill, Kim Schnitzius, Kevin Schnitzius, and Helen W. Lovell. 2000. Discovery, distribution, and origin of the purple swamphen (Porphyrio porphyrio) in Florida.' ''Florida Field Naturalist'' 28: 1–11.〕 It was added to the American Birding Association checklist in February 2013. == References ==
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