Foraging Ecology and Interactions between Herring Gulls and Great Black-backed Gulls in New England

Rome, Michelle S.; Ellis, Julie C.

doi:10.1675/1524-4695(2004)027[0200:feaibh]2.0.co;2

Cited by 51 publications

(33 citation statements)

References 21 publications

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“…The Auk: Ornithological Advances 131:434-446, Q 2014 American Ornithologists' Union feeding behavior (Rome andEllis 2004, Lance andThompson 2005). There are several explanations for how competition facilitates resource partitioning among species.…”

Section: Discussionmentioning

confidence: 99%

Resource partitioning in three congeneric sympatrically breeding seabirds: Foraging areas and prey utilization

Robertson

Bolton

Grecian

et al. 2014

The Auk

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Section: Discussionmentioning

confidence: 99%

Resource partitioning in three congeneric sympatrically breeding seabirds: Foraging areas and prey utilization

Robertson

Bolton

Grecian

et al. 2014

The Auk

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“…Resource competition may lead to adaptations that reduce niche overlap (Gause 1934) and thus explain differences in seabird foraging area and behaviour (Rome & Ellis 2004, Lance et al 2005. In mixed colonies, seabirds may have to cope with interspecific and intraspecific competition.…”

Section: Resource Partitioningmentioning

confidence: 99%

Geographical variation in the foraging behaviour of the pantropical red-footed booby

Mendez¹,

Borsa²,

Cruz³

et al. 2017

Mar. Ecol. Prog. Ser.

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While interspecific differences in foraging behaviour have attracted much attention, less is known about how foraging behaviour differs between populations of the same species.Here we compared the foraging strategy of a pantropical seabird, the red-footed booby Sula sula, in 5 populations breeding in contrasted environmental conditions. The foraging strategy strongly differed between sites, from strictly diurnal short trips in Europa Island (Mozambique channel) to long trips including up to 5 nights at sea in Genovesa Island (Galapagos archipelago). The Expectation Maximisation binary Clustering (EMbC) algorithm was used to determine the different behaviours of individuals during their foraging trips (travelling, intensive foraging, resting and relocating). During the day, the activity budget was similar for all the breeding colonies. During the night, birds were primarily on the water, drifting with currents. At all sites, birds similarly performed intensive foraging in zones of area-restricted search (ARS), although the size and duration of ARS zones differed markedly. Red-footed boobies foraged over deep oceanic waters, with chlorophyll a concentrations varying between sites. Birds did not appear to target areas with higher productivity. We suggest that range differences between populations may be linked to other factors such as intra-and interspecific competition.

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“…It is well documented that Great Black-backed Gulls are more aggressive and may out-compete Herring Gulls as well as preying on young birds (Threlfall 1968;Rome and Ellis 2004;Cotton 2009). This may at least partly explain the earlier onset of the Herring Gull decline.…”

Section: Resultsmentioning

confidence: 99%

“…In the first half of the 20 th century, Herring Gulls were by far the more numerous (Drury 1973). However, after reaching a peak in the 1970s and 1980s, their numbers along the east coast of North America started to decline, while Great Black-backed Gull numbers continued to increase (Brown et al 2001 in Rome and Ellis 2004;Shoals Marine Laboratory 2010*). Currently, in eastern Canada, the Great Black-backed Gull is deemed "not currently at risk" while Herring Gull populations are of "moderate" concern as there is an apparent population decline (Milko et al 2003*).…”

Section: Introductionmentioning

confidence: 99%

Decline in breeding of the Great Black-backed Gull, <em>Larus marinus</em>, and the Herring Gull, <em>L. argentatus</em>, on Boot Island, Nova Scotia, 1986 to 2010

MacKinnon¹,

Kennedy²

2014

Can Field Nat

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For over 50 years, Boot Island, Nova Scotia, has supported a significant mixed bird colony: Great Black-backed Gull (Larus marinus), Herring Gull (L. argentatus), Great Blue Heron (Ardea herodias), and Double-crested Cormorant (Phalacrocorax auritus). In 2002, the largest Great Black-backed Gull colony in Canada was located there. Over the last quarter century, the Herring Gull colony has shown a dramatic and near-linear decrease from 727 nests in 1986 to 67 in 2000; in 2010, only two nests remained. The number of Great Black-backed Gull nests has also declined by 44%, from 1467 nests in 1992 to 819 in 2010. These reductions may be partly attributed to factors external to the colony, such as changes in regional fisheries and better landfill management. However, a more immediate problem may be nest predation and disturbance by American Mink (Neovison vison), Raccoon (Procyon lotor), Coyote (Canis latrans), and Bald Eagle (Haliaeetus leucocephalus).

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Foraging Ecology and Interactions between Herring Gulls and Great Black-backed Gulls in New England

Cited by 51 publications

References 21 publications

Resource partitioning in three congeneric sympatrically breeding seabirds: Foraging areas and prey utilization

Resource partitioning in three congeneric sympatrically breeding seabirds: Foraging areas and prey utilization

Geographical variation in the foraging behaviour of the pantropical red-footed booby

Decline in breeding of the Great Black-backed Gull, <em>Larus marinus</em>, and the Herring Gull, <em>L. argentatus</em>, on Boot Island, Nova Scotia, 1986 to 2010

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