Song dialect recognition by male white-crowned sparrows: effects of manipulated song components

Article Abstract:

Male White-crowned Sparrows' responses to song stimuli different from their local dialect were examined by comparing responses to unaltered dialect control songs and to hybrid songs consisting of elements from two adjacent dialects. Results revealed that the dialect of the specimens was the most potent stimulus, while the neighboring dialect was the least potent. When local dialect introductory components replaced those of the adjacent dialect, the evoked response was similar to that obtained by the local dialect. Further substitutions in other parts of the song resulted in reduced responses, suggesting that the acoustic features of the first part of the song encode vocal information controlling male territorial behavior.

Research, Birdsongs, Social behavior in animals, Animal social behavior, Territoriality (Zoology), Animal territoriality

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Long-term changes in songs and song dialect boundaries of Puget Sound White-Crowned Sparrows

Article Abstract:

There have been several long-term changes in the song type distribution of Puget Sound White-Crowned Sparrows since they were recorded by L.F. Baptista (1977). Only 2 of the most-widespread dialects recorded during 1970-77 have been retained, while the others have changed during a subsequent recording in 1993 and 1994. The selection of one song type over another, or change in habitat type fail to explain these changes. Population changes unassociated with variation in song may explain these changes.

Sound production by animals, Puget Sound, Animal vocalizations

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Cultural diversification in the flight call of the ringneck parrot in Western Australia

Article Abstract:

Issues concerning the social significance of geographic variations of vocalizations of parrots in Western Australia are discussed. Particular attention is given to observations of dialects and functions of flight calls in movement coordinations of mated pairs.

Observations, Birds, Parrots, Western Australia

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