Bonaparte's Gull
Chroicocephalus philadelphia
Summary 6
Bonaparte's gull (Chroicocephalus philadelphia) is a small gull found mainly in North America.
Presence at Rosewood 7
Months Present: February-July
"Months Present" obtained from Lahontan Audubon Society at https://www.nevadaaudubon.org/birds-in-town.html
Description 8
Bonaparte's gull is among the smallest of the gull species; only little gull and Saunders's gull are smaller. Adults range from 28 to 38 cm (11 to 15 in) in length, with a wingspan of 76–84 cm (30–33 in) and a body mass of 180–225 g (6.3–7.9 oz). There is no difference in plumage or bare part colour between the sexes, though males tend to be heavier than females. Bonaparte's gull is smaller-bodied, smaller-headed, and smaller-billed than the other common hooded gulls of North America. The adult has grey upperparts and white underparts; its wingtips are black above and pale below. In breeding plumage, it has a slaty black hood, which it loses in non-breeding plumage. Its short, thin bill is black, and its legs are orangish-red.
First year Bonaparte's gulls have the same plumage in winter and summer, but the summer plumage is paler due to wear. Fewer than 5 percent of Bonaparte's gulls acquire a dark hood in their first summer, and on those that do, the hood is duller than on breeding adults.[citation needed]
Voice 8
Bonaparte's gull has a voice described as nasal and raspy, with calls variously transcribed as cherr or cheeer.
Sources and Credits
- (c) Marv Elliott, some rights reserved (CC BY-NC), uploaded by Marv Elliott
- (c) Stephen Taylor, some rights reserved (CC BY-NC), uploaded by Stephen Taylor
- (c) Michael Klotz, some rights reserved (CC BY-NC), https://www.flickr.com/photos/michaelklotz/49202831302/
- (c) Jamie Chavez, some rights reserved (CC BY-NC), https://www.flickr.com/photos/almiyi/4604739073/
- (c) Michael Klotz, some rights reserved (CC BY-NC), https://www.flickr.com/photos/michaelklotz/51418435866/
- Adapted by Hayden Wright from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Chroicocephalus_philadelphia
- (c) Hayden Wright, some rights reserved (CC BY-SA)
- Adapted by Hayden Wright from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Bonaparte's_gull
