Geographical distribution of Bonaparte's gull.    Breeding  Migration  Nonbreeding
Bonaparte's Gull (Chroicocephalus philadelphia), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: https://neotropical.birds.cornell.edu/Species-Account/nb/species/bongul
Cephas