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Bonaparte's Gull II


Bonaparte's Gull II
Photo Information
Copyright: Jean Yves Bissonnette (JYB) Silver Note Writer [C: 2 W: 0 N: 84] (916)
Genre: Animals
Medium: Color
Date Taken: 2008-05-21
Categories: Birds
Camera: Canon 30D, Canon 100-400L 4.5-5.6 IS USM
Exposure: f/7.1, 1/1000 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2008-06-07 6:47
Viewed: 2852
Points: 4
[Note Guidelines] Photographer's Note
Have a nice day to all and thanks for your comments. JYB

A small, graceful gull with bright white patches in its wings, the Bonaparte's Gull winters near people, but breeds in the isolated taiga and boreal forest.

Cool Facts


The Bonaparte's Gull is the only gull that regularly nests in trees.


The English name of the Bonaparte's Gull honors Charles Lucien Bonaparte, who made important contributions to American ornithology while an active member of the Academy of Natural Sciences of Philadelphia during the 1820s. The scientific name philadelphia was given in 1815 by the describer of the species, George Ord of Philadelphia, presumably because he collected his specimen there.


During the breeding season, the Bonaparte's Gull feeds mainly on insects, often catching them on the wing.


Description
topSize: 28-38 cm (11-15 in)
Wingspan: 76-80 cm (30-31 in)
Weight: 180-225 g (6.35-7.94 ounces)

Small gull.
White triangle in outer part of wing.
Back pale gray.
Underparts white.
Head black during breeding.
Dark spot behind eyes in winter.


Bill black.
Mouth lining orange-red.
Eyes black.
Legs orange-red.
Breeding (Alternate) Plumage: Black hood. Narrow white crescents nearly meet behind eyes, but not in front. Back gray. White outer wing feathers with black tips. Tail white. May have pinkish blush on chest.
Nonbreeding (Basic) Plumage: Head entirely white, with dark spot behind the eyes. Dark smudges on top of head and above eyes. Neck dirty gray. Back gray. Underparts white.


Sex Differences
Sexes look alike.

Immature
Juvenile with much brown on head, neck, and back, a dark bar across the wing, and a black tail tip. Immature similar to nonbreeding adult, but with brownish black bar across the base of the wing, much black in the outer wing, and a black band across the tip of the tail. In first breeding plumage the black head is partly mottled with white.

Similar Species

Terns have even longer, thinner wings, and have forked tails.
Black-headed Gull has a longer and heavier, red bill, and blackish under the outer wing feathers. In breeding plumage the Black-headed Gull actually has a brownish hood that does not reach the back of the nape.
Little Gull is smaller, with short, round wings, an all whitish back and wings, and blackish on the underside of the wings. Immature has dark cap and bold blackish "M" on wings, not the more narrow and broken "M" shown by Bonaparte's.
Immature Black-legged Kittiwake shows a bolder "M" across the back and has a black line across the nape of its neck.

Sound
Call a buzzy "keh-keh."

Range
Breeds across Alaska and central Canada to Quebec.

Winter Range
Winters along coasts from Washington to southern Mexico and New Brunswick to the Caribbean, and along the Great Lakes and large inland lakes and rivers.

Habitat
Breeds around lakes and marshes in boreal forest. Winters along lakes, rivers, marshes, bays, and beaches along coasts.

Food
Small fish and large invertebrates, including insects. Does not eat garbage or carrion.

Behavior
Foraging
Flies along and plucks food from surface of water, or plunges into water to pick food from water.

Reproduction
Nest Type
Open cup of twigs, small branches, and bark, lined with mosses and lichens. Placed in tree or bent-over rushes.

Egg Description
Buffy green, with dark spots and blotches.

Clutch Size
Usually 3 eggs. Range: 1-4.
Condition at Hatching
Semiprecocial with eyes open. Covered in down. Able to stand within a day, but usually remain quiet in nest for a week.

Conservation Status
Numbers have increased over last 100 years.

Other Names
Mouette de Bonaparte (French)
Gaviota de Bonaparte (Spanish)

Source : http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Bonapartes_Gull_dtl.html

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Critiques [Translate]

  • Great 
  • Juyona Gold Star Critiquer/Silver Workshop Editor [C: 2232 W: 10 N: 2971] (16891)
  • [2008-06-07 8:30]

Hola Jean,
interesante trabajo y encuadre,
tonos y buen foco,
saludos

  • Great 
  • GaryT Gold Star Critiquer [C: 102 W: 7 N: 236] (160)
  • [2008-07-18 12:39]

Good exposure of this gull, but I think there is too much sky. Gary

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