I describe an occurrence of interference competition between a group of five male scissor-tailed flycatchers (Tyrannus forficatus) and 11 blue jays (Cyanocitta cristata). The interaction was initiated by a subset of two blue jays and concluded after nine additional blue jays arrived at a perch on a sweet gum (Liquidambar styraciflua), causing the scissor-tailed flycatchers to leave the perch and area. Both species exhibited intraspecific cooperation during the encounter.
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1 September 2014
Aggressive encounter of a group of blue jays (Cyanocitta cristata) toward a group of scissor-tailed flycatchers (Tyrannus forficatus)
Troy A. Ladine
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The Southwestern Naturalist
Vol. 59 • No. 3
September 2014
Vol. 59 • No. 3
September 2014