Saira Bibi, Muhammad Fiaz khan, Aqsa Rehman and Syed Javaid Khurshid
Chiffchaff belongs to the nominate race collybita and inhabits mainly deciduous or mixed woodlands. This study documents aspect of breeding biology of chiffchaff Phylloscopus collybita in Chhajjian, Haripur. KPK, Pakistan. We investigated the parameters such as: (1) laying dates; (2) length of the breeding season; (3) nest site usage; (4) clutch size; (5) length of the nestling period; and (6) the relative importance of causes of nest failure. First clutches are laid in the second half of April, and early May, with second clutches in June. Nests are built close to the ground, usually in Bramble Bushes Average clutch size decreases from 6 to 4 eggs through the season. Incubation and nestling periods last 13-14 days. Nest losses are mainly due to predation, which accounted for approximately 60% of losses in both data sets from five different localities. This is the first-ever documentation on chiffchaff from Pakistan so it will help the further finding to researcher and also for the conservation of then.
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