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Resumen de Posible elección del territorio de cría por parte de la hembra en el Aguilucho Cenizo Circus pygargus

Josep Bosch

  • In Montagu' s Harrier Circus pygargus, males usually return from the African winter quarters some days before the females. Some authors state that the males establish the nesting territory and that the female apparently selects the nest site. This note describe a breeding pair in the NE of the Iberian Peninsula in 1986, where before the arrival of the female, the male was established in a territory also occupied in previous years. A few days after the male mated with a female, and immediately before egg-laying, it seems that this pair established a new nesting territory 4.5 km away from the male? s initial territory.


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