Body size, habitat quality, and territory defense in Bachman’s sparrow

Autor:	Rindy C. Anderson, Morgan C. Slevin, Joseph M. Niederhauser, Erik G. Noonburg
Rok vydání:	2021
Předmět:	Behavioral Neuroscience Geography Habitat Ecology media_common.quotation_subject Animal Science and Zoology Quality (business) Body size media_common Bachman's sparrow
Zdroj:	Behaviour. 158:479-502
ISSN:	1568-539X 0005-7959
Popis:	Many wild populations of animals conform to the ideal despotic distribution (IDD) in which more competitive individuals exclude less competitive individuals from high quality resources. Body size and aggressiveness are two important traits for resource defense, and they positively covary so that larger individuals are usually more aggressive. Using Bachman’s sparrows, we tested the hypothesis that larger birds are more aggressive and are thus able to compete for the best quality territories. We found that larger males were more aggressive, and more aggressive birds fledged at least one young. However, we did not find consistent relationships between aggressiveness and habitat characteristics. Our results suggest that Bachman’s sparrows meet most of the predictions of the IDD. Frequent ecological disturbances, such as fires, might disrupt the IDD or make it difficult to detect. Additional studies are needed to test for relationships between ecological disturbances and territorial behaviour.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f1b08d3c1802dbcc117486c7c2f664d9 https://doi.org/10.1163/1568539x-bja10079 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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