Nest spacing in relation to settlement time in colonial cliff swallows
Article Abstract:
Cliff swallows frequently settle closer together than necessary based on the available nesting substrate. Research in this area used the known quantity of nesting habitat at a colony site to calculate the anticipated nearest-neighbour distance that would maximize the spacing between active nests. When they have a choice in nest spacing, cliff swallows usually do not nest at the minimum nearest-neighbour distances seen in the larger colonies. It seems that cliff swallows actively benefit from the presence of conspecifics, with coloniality not being just a response to a favourable habitat patch or shortage of nesting sites.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2000
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Repertoire matching between neighbouring song sparrows
Article Abstract:
Song sparrows reply to the songs of particular neighbors with specific songs from their repertoire. In an experiment involving the playback technique, when the neighbour song was played to the subject from the neighbor's territory, the subject reciprocated with a repertoire matching in 87.5% of trials. Subjects responded only 17% of the time when a stranger song was played from the same place. Repertoire matching is a means of long distance communication between neighbors producing common song types.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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Signals for parent-offspring recognition: a comparative analysis of the begging calls of cliff swallows and barn swallows
Article Abstract:
Cliff swallow parents reveal a higher response than barn swallow parents to their offsprings' begging calls. The parents of cliff swallows are able to distinguish their own offspring from other chicks whereas the parents of barn swallows cannot. Cliff swallow calls include repetitive frequency modulation and contain more information than barn swallow calls.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1993
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