Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Fred Cooke"'
Publikováno v:
Ringing & Migration. 34:131-141
Timed sea-watches were carried out at Holme Bird Observatory, Norfolk, UK, between May 2005 and December 2015. The rate of passage of 20 species was calculated as the number of birds passing the ob...
Autor:
Jean Hamann, Fred Cooke
Publikováno v:
Ibis. 129:527-532
It is well known in many species of birds that mean clutch size increases and laying date advances with increasing age of the female. This has been interpreted widely as being due to some maturation process in which the performance of individual bird
Publikováno v:
Ibis. 117:339-356
Summary The paper summarizes observations on the pelagic distributions of sea-birds in Drake Passage and off southern South America, collected by ship-borne observers between December 1969 and April 1970, and in March and April 1972. The birds' distr
Publikováno v:
Landscape Ecology. 22:1283-1289
Burger and Page (this volume) evaluated our models of habitat preferences and breeding success of a threatened seabird, the marbled murrelet (Brachyramphus marmoratus), based on the largest available set of confirmed nest-sites found in coastal old-g
Publikováno v:
Journal of Applied Ecology. 44:748-759
1. The marbled murrelet Brachyramphus marmoratus is a threatened Alcid nesting in old-growth coastal forests from central California to Alaska. Logging has greatly reduced the amount and altered the pattern of the species' nesting habitat. Landscape
Publikováno v:
The Condor. 106:252-262
We assessed age- and sex-specific distribution patterns of Surf Scoters (Melanitta perspicillata) wintering in southern coastal British Columbia, Canada, and evaluated potential biases associated with the use of male age ratios as an index of their r
Publikováno v:
Journal of Wildlife Management. 68:318-331
Demographic parameter estimates are essential for understanding population ecology and developing management plans for species of concern. We inferred measures of breeding success using radiotelemetry in the marbled murrelet (Brachyramphus marmoratus
Publikováno v:
Northwestern Naturalist. 85:1-10
Population demographics of marbled murrelets (Brachyramphus marmoratus) are difficult to measure. Population size can be estimated from at-sea densities, and productivity indices are sometimes derived from ratios of hatch-year to after-hatch-year bir
Autor:
Fred Cooke
Publikováno v:
Bird Study. 50:211-222
Capsule A comparison between North American and European ornithology shows many differences between the two. While local knowledge was developed over millennia in Europe, in North America much was originally learned from the indigenous people. Knowin
Publikováno v:
Conservation Biology. 17:1118-1126
Population size is a fundamental variable of interest in most conservation programs, as are the de- mographic processes underlying variation in numbers. The Marbled Murrelet ( Brachyramphus marmoratus ) is a seabird nesting in coastal old-growth fore