Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Brian D. Sullivan"'
Publikováno v:
The Southwestern Naturalist. 48:241-248
The High Plains of Texas is one of the southernmost nontraditional breeding areas for many duck species in North America. Because of a paucity of information on breeding ducks there, we conducted roadside surveys of breeding ducks and their habitats
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23af23e1f25456393df7a84ef2a3c7b6
https://doi.org/10.1894/0038-4909(2003)048<0241:bdathi>2.0.co
https://doi.org/10.1894/0038-4909(2003)048<0241:bdathi>2.0.co
Autor:
Lawrence E. Vine, William E. Wheeler, Paul W. Rasmussen, Timothy J. Moser, Donald H. Rusch, Brian D. Sullivan
Publikováno v:
The Journal of Wildlife Management. 65:716
Subspecific classification of Canada geese (Branta canadensis) based on morphological measurements serves many management and research functions, such as determining harvest pressure on subspecies or estimating the population composition of wintering
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20c97a8305c9f0f3a94d4d916120747a
https://doi.org/10.2307/3803022
https://doi.org/10.2307/3803022
Autor:
Brian D. Sullivan, James J. Dinsmore
Publikováno v:
The Journal of Wildlife Management. 54:433
We studied predation by breeding American crows (Corvus brachyrhynchos) on artificial duck nests in upland and overwater habitats from April to July in 1986 and 1987 in the prairie pothole region of southwestern Manitoba, Canada. Predation was higher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e360ac8082ead03b24dc06a6c706795
https://doi.org/10.2307/3809654
https://doi.org/10.2307/3809654