Aves, p�le ornithologique de Natagora

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Aves, 26/3-4 | 1989 | 159-168

  Is the activity of Spanish Sparrows (Passer hispaniolensis) influenced by the density of breeders ?
Metzmacher, M.

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Article summary

The evolution of the activity of Spanish Sparrows (Passer hispaniolensis) has been pursued in the context of a study of their ecology in semi-arid zone of Algeria. The object of this note is the effect of density on the activity of the breeders. The preliminary results, as regards male activity, allow us to make the following remarks : -In general, breeders in high density groups spend more time in aggressive activities (threatening postures and aggressive chasing) than do "solitary" breeders. On the other hand, they spend far less time cheeping. -Nest-building activity does not seem to evolve in the same way for the two types of breeders : the profile is, indeed, markedly different.

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