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1 June 2013 Neighbor-Stranger Discrimination On the Basis of A Threat Vocalization In the Great Black-Backed Gull
Christina Masco
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Abstract

Neighbor-stranger discrimination is the ability to recognize and respond differentially to familiar and unfamiliar conspecifics. This type of recognition is common in species that aggressively defend territories, such as the colonially nesting Great Black-backed Gull (Larus marinus). This species has a large agonistic signal repertoire, which includes the “yeow,” a short-range threat vocalization. A playback experiment was used to determine whether Great Black-backed Gulls are capable of recognition on the basis of this call type. Subjects maintained alert postures for significantly longer in response to unfamiliar yeows than to those of their mates or neighbors. To my knowledge, this is the first study to demonstrate neighbor-stranger discrimination on the basis of a threat vocalization.

2013 by the Wilson Ornithological Society
Christina Masco "Neighbor-Stranger Discrimination On the Basis of A Threat Vocalization In the Great Black-Backed Gull," The Wilson Journal of Ornithology 125(2), 342-347, (1 June 2013). https://doi.org/10.1676/12-095.1
Received: 2 June 2012; Accepted: 1 January 2013; Published: 1 June 2013
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