First Documented Observation of Island Scrub-Jay (Aphelocoma insularis) Precopulatory Display

Rebecca G. Cheek; Michelle L. Harris; Anna Kennedy

doi:10.3398/064.079.0213

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Rebecca G. Cheek,^1,* Michelle L. Harris,² Anna Kennedy³

¹1Department of Biology, Colorado State University, Fort Collins, CO 80521
²2Humboldt State University, McKinleyville, CA 95519
³3El Granada, CA 94018

^*Corresponding author: rebecca.g.cheek@gmail.com

Abstract

We report what we believe is the first documented observation of Island Scrub-Jay (Aphelocoma insularis) copulation behavior. We compare our observations to the behaviors of other Aphelocoma jays with the aim of identifying potential species-specific elements. There are observable differences between the precopulatory display of the Island Scrub-Jay and that of more distantly related Aphelocoma jays. The display of Island Scrub-Jay and that of the closely related California Scrub-Jay (Aphelocoma californica) are very similar despite the species being isolated from each other for approximately 1 million years.

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Rebecca G. Cheek, Michelle L. Harris, and Anna Kennedy "First Documented Observation of Island Scrub-Jay (Aphelocoma insularis) Precopulatory Display," Western North American Naturalist 79(2), 275-279, (12 June 2019). https://doi.org/10.3398/064.079.0213

Received: 8 September 2018; Accepted: 8 February 2019; Published: 12 June 2019

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