Song sparrows learn from limited exposure to song models

Article Abstract:

Song sparrows appear to possess the neural mechanisms needed to learn their own species' songs after a limited exposure to tape-recorded models. The extent of exposure did not influence the completeness nor the accuracy of the imitation. The study animals were exposed to the song relatively late in the sensitive phase for learning, hence, the timing of the exposure may have significantly influenced the quality of learning.

Research, Sparrows, Sound production by animals, Learning in animals, Animal learning, Animal vocalizations

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Diving ability of Blue Petrels and Thin-billed Prions

Article Abstract:

Blue Petrels and Thin-billed Prions at Kerguelen Islands can dive up to five to seven meters. The birds have a low wing loading, which makes them poorly suited for diving. The ability of these birds to dive during chick-rearing period may allow them more foraging grounds. The morphology of diving petrels and shearwaters allows them to dive deeper than seven meters, while albatrosses dive up to seven meters.

Physiological aspects, Observations, Natural history, Animal swimming, Petrels, Kerguelen Islands

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