Features of nesting biology and nesting success of the jay Garrulus glandarius krynicki in Stavropol Territory
https://doi.org/10.18470/1992-1098-2025-4-8
Abstract
The objective was the assessment of the nesting success of jays in the Stavropol Territory and to identify factors influencing the reproductive ecology of the species in the region.
Observations of the breeding success of the jay were carried out during the nesting period of 2010–2023 in the north, east and northeast of the Stavropol Territory, within modelled areas. Over the entire period of our research, 27 jay nests were examined. Of these, 7 nests were control nests, which were carefully observed.
The article presents data on the features of the placement of jay nests, taking into account the height, the location of nests in the crown of trees and the occurrence of nests on different types of trees. The text describes the main metric indicators and building materials of nests. We measured the biometric indicators of jay eggs and identified their correlations.
During the study of nesting behavior of jays, it was found that nests are located most often on dominant tree species. Among the preferred tree species, can be singled out apple, poplar, ash, oak and honey locust. The average jay clutch size varies from 3 to 7 eggs. The jay living in the Stavropol Territory is characterised by significant variation in the weight of eggs in different nests. One of the main factors determining the success of reproduction of this species is the choice of location for constructing a nest.
About the Authors
L. V. Malovichko
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Lyubov V. Malovichko
Moscow
A. G. Rezanov
Moscow City University
Russian Federation
Russian Federation
Alexander G. Rezanov
Moscow
V. V. Kuznetsova
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Valeria V. Kuznetsova, Assistant, Department of Zoology
44/16 Timiryazevskaya St, Moscow, 127550
Tel. +79204962465
A. A. Rezanov
Moscow City University
Russian Federation
Russian Federation
Andrey A. Rezanov
Moscow
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For citations:
Malovichko L.V., Rezanov A.G., Kuznetsova V.V., Rezanov A.A. Features of nesting biology and nesting success of the jay Garrulus glandarius krynicki in Stavropol Territory. South of Russia: ecology, development. 2025;20(4):88‐101. (In Russ.) https://doi.org/10.18470/1992-1098-2025-4-8
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