Reproductive behaviour of Mountain Chiffchaffs Phylloscopus sindianus in Tajikistan

Kvartalnov, P.; Ilyina, I.; Grabovskiy, A.

Авторы: Kvartalnov P., Ilyina I., Grabovskiy A.
Сборник: 9th Conference of the European Ornithologists’ Union. Programme & Abstracts
Тезисы
Год издания: 2013
Место издания: European Ornithologists' Union Norwich, UK
Первая страница: 124
Последняя страница: 124
Аннотация: We studied the biology and behaviour of Mountain Chiffchaffs Phylloscopus sindianus in 2011 and 2012 in the Panj and Ghund river valleys in the Pamir Mountains, where these warblers inhabit riverside thickets from 2300 up to 3500 m.a.s.l. Seventeen nests were placed in sea-buckthorn, wild rose and tamarisk bushes between 13 and 111 cm above the ground. Full clutches comprised 4-5 eggs. The birds are principally monogamous. Each male continues singing in close vicinity to his nest after pair formation, but not above the nest. Nest construction and incubation is by the female only. When females leave the nest during the incubation period, she usually flies directly to her singing partner and forages in his presence. On the day of hatching each female shows nestlings to the male and he starts feeding asintensively as his mate. One male fed nestlings two days after his mate's death. We recorded one case of polygyny when a female became a secondary mate of the neighbour male after her nest was depredated, while the first mate of the polygynous male wasincubating a replaced clutch. Polygynous males started singing on two territories, near the nests of his two mates. This case shows that male singing during incubation in Mountain Chiffchaffs isinitially addressed mainly to his mate, not to other females. Later this male wasseen feeding hisfledglings from one nest and nestlings from another nest in the same time. Biology of the Phylloscopus sindianus sindianus is unique among other forms of the Chiffchaff complex. Similar to Phylloscopus sindianus lorenzii they inhabit thickets in the alpine zone, but tend to breed in river valleys (not on watersheds), they prefer thorny shrubs and have significant male care of the young (which is also a common feature in Canary Islands Chiffchaffs Phylloscopus canariensis). The study wassupported by the Russian Fund for Basic Research and the Rufford Small Grants Foundation.
Добавил в систему: Квартальнов Павел Валерьевич

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