Open Access Open Access  Restricted Access Subscription Access

A successfully breeding, partially leucistic American Robin (Turdus migratorius)

Nina M. Zitani, Leanne A. Grieves, R. Greg Thorn

Abstract


American Robin (Turdus migratorius) is the most abundant and broadly distributed thrush in North America. Both sexes likely engage in mate choice, and there is some evidence of assortative mating based on breast colour in this species. Over two breeding seasons, we documented a case of partial leucism, primarily of the breast feathers, in a male American Robin in London, Ontario, Canada. We report evidence that the leucistic robin was capable of successful breeding. How the fitness of leucistic versus normal robins compares and how leucism influences mate choice in this and other species remain to be explored.


Keywords


Ornithology; colouration; leucism; sexual selection; fitness; breeding; American Robin; Turdus migratorius

Full Text:

PDF


DOI: http://dx.doi.org/10.22621/cfn.v133i4.2141



Volumes that are more than six years old are freely available courtesy of the Biodiversity Heritage Library.

 


Questions or problems with the website? Contact William Halliday (info -at- canadianfieldnaturalist -dot- ca).