Photos: 4
Forms: 2 (M/Breeding/caerulea, caerulea)
Eastern (caerulea)
US-DCUS-DEUS-ILUS-MDUS-TNUS-VA
3ISSF; western, eastern, and cozumel.
Plumage varies, with breeding (JAN-AUG) male sporting a black supercilium and forehead.
M/F differ, but only in breeding plumage (see above).