News From the Field
'Team of rivals' approach works for sparrows defending territories
February 26, 2014
This material is available primarily for archival purposes. Telephone numbers or other contact information may be out of date; please see current contact information at media contacts.A new study of territorial songs used by chipping sparrows to defend their turf reveals that males sometimes will form a "dear enemy" alliance with a weaker neighbor to prevent a stronger rival from moving in. About one time out of five, a neighboring male flew into the territory of the study male and helped him repel the simulated intruder.Full Story
University of Massachusetts Amherst
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