Digital Library of Zielona Góra contains 63 052 digital objects
Object
Title: Seasonal changes in group size and foraging activity in an urban population of Magpies ("Pica pica")
Group publication title:
Abstract:
We studied seasonal variation in group size and feeding activity in an urban population of Magpies in Zielona Gora, Western Poland. Each month from 1984 to 1987 we counted the species along a 10 km transect across the city and noted the number of single birds, pairs and flocks as well as flock size. In 1999 and 2000 we regularly observed Magpies foraging on the lawns of a park of Zielona Gora and recorded the number of pecks, as a measure for feeding activity. ; Magpies were most often encountered as single birds in April and May, as pairs in March, and in flocks in August. This pattern is predominantly dictated by the constraints of the breeding season and by reproductive success. The mean flock size was highest in August. Pecking rate showed a minimum in the summer months, with no sex-specific difference. However, males were much more active in foraging during winter, probably due to their larger body size and the respective higher energetic requirements.
Publisher:
Zielona Góra: University of Zielona Góra, Faculty of Biological Sciences
Format:
Resource Identifier:
DOI:
Pages:
Source:
International Studies on Sparrows, vol. 36
Language:
Rights:
Biblioteka Uniwersytetu Zielonogórskiego
Object collections:
- Digital Library of Zielona Góra > Repository > Faculties > Faculty of Biological Sciences
- Digital Library of Zielona Góra > Repository > Types of work > Articles
- Digital Library of Zielona Góra > Repository > Scientific journals and UZ publishing series > International Studies on Sparrows
Last modified:
May 23, 2023
In our library since:
May 5, 2023
Number of object content hits:
153
All available object's versions:
https://www.zbc.uz.zgora.pl/publication/81578
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| Edition name | Date |
|---|---|
| Seasonal changes in group size and foraging activity in an urban population of Magpies ("Pica pica") | May 23, 2023 |
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