3/4/22 - WFIB- White-faced Ibis
I didn't think that I had seen this one before, but I have, during a visit to Lake Tahoe in 2018. Beautiful glossy bird - not to be confused with the glossy ibis (although they have been known to hybridize where their ranges overlap) This bird has two separate populations. The ones in the Western US congregate around wet marshy areas. Some migrate, from Mexico up to the Canadian border. There is a totally separate population that lives in South America - Brazil and Argentina. And they don't migrate. Which got me to wondering -- how are there two totally separate populations of these birds, which are apparently the same species?
By Alan Vernon - White faced Ibis, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=8824384
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