COMMON ENGLISH NAME ALPHA CODES:

< http://www.pwrc.usgs.gov/bbl/manual/aspeclst.htm

< http://www.birdpop.org/DownloadDocuments/Alpha_codes06_Phylogenetic.pdf

< http://www.birdpop.org/DownloadDocuments/Alpha_codes06_Common_Name.pdf
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AGING, PLUMAGE AND MOLT TERMINOLOGY:

< http://www.prbo.org/cms/docs/terre/Howell%20Birding%20molt%202003%20part%202.pdf

< http://www.scricciolo.com/Plumages%20and%20Molts/plumages_molts.htm

< http://elibrary.unm.edu/sora/wb/v31n01/p0050-p0056.pdf
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