Pomarine Skua (Stercorarius pomarinus) Science Article 1 abstract Several recent studies of seabirds have found high levels of nonbreeding by experienced adults. By contrast, just 8.9% (range 4-14%) of experienced Great Skuas (Catharacta skua) on Foula, Shetland Islands, deferred breeding between 1989-1996. For Parasitic Jaegers (Stercorarius parasiticus), a corresponding value of 5.5% (range 3-8%) was […]
Intersexual differences in feeding ecology in a male dominated wintering Pochard Aythya ferina population.
Pochard (Aythya ferina) Science Article 1 abstract Intersexual differences in feeding rates, aggression rates, an d feeding site selection were investi gated in a flock of up to 2700 Pochard Aythya ferina wintering at Salford docks, Greater M anchester (239 males per 100 females) . As often found elsewhere, females were less aggressive than males, […]
Abundance of two Dendrocincla woodcreepers (Aves:Dendrocolaptidae) in relation to forest structure in CentralAmazonia
Plain-brown Woodcreeper (Dendrocincla fuliginosa) Science Article 1 abstract Few studies have been conducted to verify how the structure of the forest affects the occurence and abundance of neotropical birds.Our research was undertaken between January 2002 and July 2004 at the Reserva Ducke, near Manaus (02
THE PLAIN-BREASTED GROUND DOVEIN SURINAM
Plain-breasted Ground-Dove (Columbina minuta) Science Article 1 abstract The Plain-breasted Ground Dove (Columbina minuta minutu) is an extremely local bird in the coastal plain of Surinam (Haverschmidt, Birds of Surinam, p. 135, Oliver & Boyd, Edinburgh, 1968). I know of only one locality near Paramaribo where it is fairly numerous, and I have found it […]
Crop damage and management of the Pink-footed Goose Anser brachyrhynchus in Denmark
Pink-footed Goose (Anser brachyrhynchus) Science Article 3 abstract More than 25 000 Pink-footed Geese Anser brachyrhynchus migrate through and stage on sites on the West Coast of Jutland in Denmark every year in autumn and spring. There is currently concern at the rate of loss of suitable staging habitats, as well as problems of conflict […]
Pre-nesting site use of satellite transmitter tagged Svalbard Pink-footed Geese Anser brachyrhynchus.
Pink-footed Goose (Anser brachyrhynchus) Science Article 5 abstract We deployed satellite transmitters (PTTs) to Pink-footed Geese Anser brachyrhynchus to discover pre-nesting sites on Svalbard. 14 adult male were caught in Vest Stadil Fjord, Denmark and fitted with PTTs powered by batteries (n = 11; 30 g) or by solar power (n = 3; 45 g), […]
Intake rates, stochasticity, or onset of spring-what aspects of food availability affect spring migration patterns in Pink-footed Geese Anser brachyrhynchus?
Pink-footed Goose (Anser brachyrhynchus) Science Article 6 abstract Long-distance bird migration consists of several flight episodes interrupted by a series of resting and refuelling periods on stopover sites. We assessed the role of food availability as the determinant of staging decisions focusing on the following three aspects of food availability: intake rates, stochasticity in intake […]
Pink-footed Goose Anser brachyrhynchus (Greenland/Iceland population) in Britain1960/61-1999/2000
Pink-footed Goose (Anser brachyrhynchus) Science Article 2 abstract This report examines changes in the abundance and non-breeding distribution of the Greenland/Iceland population of Pink-footed Goose Anser brachyrhynchus during the period 1960/61 to 1999/2000. It also aims to evaluate the historical status of this population, to review published information on the ecology, population dynamics and conservation […]
Diet and habitat use of Svalbard Pink-footed Geese Anser brachyrhynchus during arrival and pre-breeding periods in Adventdalen.
Pink-footed Goose (Anser brachyrhynchus) Science Article 4 abstract The feeding behaviour of Pink-footed Geese Anser brachyrhynchus was studied in Adventdalen, Svalbard during 15-28 May 2004 to determine habitat use of newly arrived birds based on their distribution in relation to the major vegetation types present. Goose numbers increased from initial arrival on 15 May to […]
Spring migration strategies in Pink-footed Geese Anser brachyrhynchus an d consequences for spring fattening and fecundity.
Pink-footed Goose (Anser brachyrhynchus) Science Article 1 abstract Individu al variation in spring migration strategies was analysed for neckbanded Pink-footed Geese Anser brachyrhynchus migrating from Denmark (D) via stopover sites in the Trondheimsfjord area (T) in mid-Norway and Vesteralen (V) in northern Norway to the breeding grounds in Svalbard, 1990-97 . Body condition of marked […]