Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Sandra H. Ligon"'
Publikováno v:
Ethology. 87:134-148
Social units of the cooperatively breeding superb fairy-wren Malurus cyaneus consist of either a simple male-female pair or a pair plus one or more additional birds, usually males. Early work on this species led to the conclusion that females were le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdb412a44dad68afad4b90550b995c33
https://doi.org/10.1111/j.1439-0310.1991.tb01195.x
https://doi.org/10.1111/j.1439-0310.1991.tb01195.x
Autor:
Sandra H. Ligon, J. David Ligon
Publikováno v:
The Auk. 107:765-771
In a population of Green Woodhoopoes (Phoeniculus purpureus) in the Rift Valley of Kenya, food abundance and breeding success varied greatly as a result of highly unpredictable patterns and abundance of rainfall. A given pair of woodhoopoes may breed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23992b3624668a1e6c97071c92c05f9b
https://doi.org/10.2307/4088009
https://doi.org/10.2307/4088009
Autor:
Marlene Zuk, Randy Thornhill, J. David Ligon, Kristine Johnson, Steven Austad, Sandra H. Ligon, Nancy Wilmsen Thornhill, Colleen Costin
Publikováno v:
The American Naturalist. 136:459-473
Mate-choice experiments allowing a female red jungle fowl (Gallus gallus) to choose between two roosters showed female preferences for several male secondary sex characters. In 1987, male comb length was most strongly related to mating success, with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfa7e112f0ccd8136e7a7d75bc2e4be7
https://doi.org/10.1086/285107
https://doi.org/10.1086/285107
Autor:
Sandra H. Ligon, J. David Ligon
Publikováno v:
Scientific American. 247:126-134
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0a034f44fefed0b4769af3c86321f8b
https://doi.org/10.1038/scientificamerican0782-126
https://doi.org/10.1038/scientificamerican0782-126
Publikováno v:
The Auk. 105:123-127
Cooperative breeding in birds generally is related to a critical resource. A critical limiting factor for the Green Woodhoopoe (Phoeniculus purpureus) is the availability of roost cavities. Although predation at roost holes is the major source of mor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ada084cbefa2acfcf1de4680b44bc9a
https://doi.org/10.1093/auk/105.1.123
https://doi.org/10.1093/auk/105.1.123
Autor:
J. David Ligon, Sandra H. Ligon
Publikováno v:
Animal Behaviour. 31:480-489
Green woodhoopoes ( Phoeniculus purpureus ) exhibit behaviours that appear to meet all the criteria of reciprocity. In this species social units typically are composed of one breeding pair plus a variable number of helpers. A helper (X) that feeds ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bd818dce71ce3bde104354ead4a2bae
https://doi.org/10.1016/s0003-3472(83)80069-4
https://doi.org/10.1016/s0003-3472(83)80069-4
Autor:
Sandra H. Ligon, J. David Ligon
Publikováno v:
Nature. 276:496-498
RECIPROCITY1, or reciprocal altruism2, and kin selection3 are concepts basic to sociobiology. Although both theories have been widely accepted4, little critical evidence exists for either5,6. Communal, or cooperatively breeding, birds are important o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80def8fd97832d1ac44285634bac9305
https://doi.org/10.1038/276496a0
https://doi.org/10.1038/276496a0
Autor:
Sandra H. Ligon
Publikováno v:
Journal of Mammalogy. 57:580-582
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a2db87cd85eac49517916f1c05f941e
https://doi.org/10.2307/1379308
https://doi.org/10.2307/1379308
Autor:
Sandra H. Ligon, J. David Ligon
Publikováno v:
Nature. 280:174-174
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0f076850717b62446a7dd1f64b749ce
https://doi.org/10.1038/280174b0
https://doi.org/10.1038/280174b0