Glossy vs White-faced Ibis
Pyle, 2008.
Identification Guide to North American Birds, Part II
.
(Copied with permission from the author.)
Known to many as The Banders' Bible, "Pyle I and II" are my go-to resource for tricky IDs.
I
highly recommend
these two books
to anyone interested in bird identification!
Order online here:
http://www.slatecreekpress.com/orderIDG.htm
See Dave Slager's photos of a SY White-faced Ibis and 2 HY
Plegadis sp.
at
http://www.flickr.com/photos/daveslager/sets/72157630612334970/
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