genus
Masked Gulls and Allies
Chroicocephalus
Field notes
Chroicocephalus is a genus of medium to relatively small gulls which were included in the genus Larus until genetic evidence published in 2005 showed that Larus as then constituted was paraphyletic. Ten species are currently accepted. The genus name Chroicocephalus is from Ancient Greek khroizo, "to colour", and kephale, "head".
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Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Most observed native masked gulls and allies All
Native to the US, by observations.
