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Larus Marinus - Great Black-Backed Gull Eating A Crab | Greenport, New York

© Sophie W. Smith

Joined October 2012

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Artist's Description

Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Charadriiformes
Family: Laridae
Genus: Larus
Species: L. marinus
Binomial name
Larus marinus
Linnaeus, 1758

Like most gulls, they also capture fish with some regularity and will readily capture any fish smaller than itself found close to the surface of the water. Whether caught or eaten after death or injury from other sources, stomach contents of great black-backed gulls usually show fish to be the primary food. On Sable Island in Nova Scotia, 25% of the stomach contents were comprised by fish but 96% of the reguirations given to young was made up fish. Similarly, on Great Island in Newfoundland, 25% of the stomach contents were fish but 68% of regurgitants were fish. The most regularly reported fish eaten in Nova Scotia and Newfoundland were capelin (Mallotus villosus), Atlantic cod (Gadus morrhua), Atlantic tomcod (Microgadus tomcod), Atlantic mackerel (Scomber scombrus), Atlantic herring (Clupea harengus) and sand lance (Ammodytes hexapterus). Other prey often includes various squid, Jonah crabs (Cancer borealis), rock crabs (Cancer irroratus), sea urchins, green crabs (Carcinus maenas), starfish (Asterias forbesi and Asterias rubens) and other echinoderms, crustaceans and mollusks when they come across the opportunity. From observations in northern New England, 23% of observed prey was echinoderms and 63% was crustaceans. Read more

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