Brezgunova O. Corvids' communal roosts: distribution, organisation and behaviour strategies

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0408U004307

Applicant for

Specialization

  • 03.00.08 - Зоологія

21-10-2008

Specialized Academic Board

Д 26.153.01

Schmalhausen Institute of Zoology of National Academy of Sciences of Ukraine

Essay

I investigated the distribution of main communal roosts and sub-roosts of Black-billed Magpie, Hooded Crow and mixed flocks of Rook and Jackdaw. 15 cluster Magpie roosts, which include main roost territories and several sub-roosts.One of my goals was to discover avian species, which form multi-species roosts with Black-billed Magpie at the same locations. The breeding Magpies have two types of roosting behaviour in breeding period.The distribution and organisation of main communal roosts and sub-roosts of Hooded Crows and mixed flocks of Rooks and Jackdaws were investigated also. These species maintain main communal roosts from October to March and sub-roosts at the rest of time.

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