Nesting biology of the Magpie in conditions of Kaliningrad city. - E.L. Lykov. - Berkut. 11 (2). 2002. - P. 181-187.
Magpie is widely spread in Kaliningrad city. This species nests in gardens, parks, forested areas, industrialized zones, city quarters and meadowswith groups of bushes and trees. Extrapolation of the counting data has shown that there are 700–720 pairs of Magpie nesting in Kaliningrad (totally 159 nests were found and described). Magpie uses 21 species of trees and bushes as a place for nest. The most preferred plant species are Grey Willow, Hawthorn, Common cherry, Common plum, Cherry plum, Lombardy poplar and Small-leaved lime. Nests are commonly located on the height of 0,5–0,9 m, seldom up to 18 m above ground surface. Height of the nest location has clear trend to grow in the following row: meadows with groups of bushes and trees – gardens – greened city quarters. Majority of birds start construction of nests in end of March. Magpie often uses aluminum wire as a nest material. The period of eggs laying is long-lasting (from 3rd decade of March to 2nd decade of May). Maximum number of new clutches is in 2nd decade of April. Number of eggs in complete clutch varies between 3 and 9 (6,66 ± 0,17 on average). Eggs size is 28,7–36,5 x 21,0–25,3 mm, on average 32,95 x 23,14 mm. Population of Magpie in Kaliningrad city by the average size of clutch is most similar to populations in Nizhniy Novgorod and Voronezh; by the morphological characteristics of eggs – to Nizhniy Novgorod, Belarus and Moscow. Results of the research allow recognize Magpie in Kaliningrad as a highly urbanized species. [Russian].
Key words: Magpie, Pica pica, Kaliningrad region, ecology, breeding, nest, egg.
Address: E.L. Lykov, Gaydar str., 99/69, 236029, Kaliningrad, Russia.

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