@article{a8b3c6c4230e4421be1dde8d8d7a9df2,
title = "Social dominance in communal Mexican jays Aphelocoma ultramarina",
abstract = "Social dominance among members of seven social units of communal Mexican jays (Aphelocoma ultramarina) was studied at feeding stations during the non-breeding season. Hierarchies were generally linear. Males were usually dominant to females and there was a tendency for the oldest male in each unit to be the most dominant adult. An unusual pattern of high social status of yearlings was observed. We attribute the high social status of yearlings and adult males to different causes. Adult male dominance is probably related to competition for breeding opportunities within each social unit. We tentatively interpret the dominance of the yearlings in terms of payoff asymmetries and parental facilitation.",
author = "Barkan, {Christopher P.L.} and Craig, {John L.} and Strahl, {Stuart D.} and Stewart, {Anne M.} and Brown, {Jerram L.}",
note = "Funding Information: We thank Esther Brown, Steve Martindale, and Nell Sedransk for helpful discussion and assistance in various phases of this work . For logistical support in the field we thank the staff of SWRS, particularly Vince Roth and Joseph Remington . We are also very grateful to the Southwestern Research Station of the American Museum of Natural History for use of their land and facilities . Special thanks to Ed and Charlotte Bagwell, the late Matthew and Anne Pugsley, Otto and Agnes Bruhlman and Mont Cazier for kindly allowing us to work on their land . R . Kent Johnson and Lee Elliott provided data collected in the 1982 and 1983 field seasons . G . Woolfenden, W . Koenig, and A . Gaston made helpful comments on the manuscript . Finally, C .P .L .B . thanks Libby Lyman Barkan for her kind support during the completion of this research . Financial support was provided by a Sigma Xi Grant in Aid to S .D .S . and NIMH grants MH16345, MH33498 and NSF grant BNS 811558902 to J .L.B .",
year = "1986",
month = feb,
doi = "10.1016/0003-3472(86)90021-7",
language = "English (US)",
volume = "34",
pages = "175--187",
journal = "Animal Behaviour",
issn = "0003-3472",
publisher = "Academic Press Inc.",
number = "PART 1",
}