Impact of urbanization on bird composition and breeding biology of invasive bird species in Jalandhar
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Date
2020
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Punjab Agricultural University, Ludhiana
Abstract
The present study was carried out on bird composition and breeding biology of invasive bird species in Jalandhar city of Punjab from July 2018 to June 2019. Two transects each were selected from residential, commercial, and industrial areas of the city with different landscape features. During the study, 50 bird species were recorded comprising of two alien invasive, five native invasive, and 43 native bird species. Two alien invasive species Blue Rock Pigeon and Common Myna formed 32.63% to 90.60%, native invasive species formed 7.73% to 52.34%, and native species formed only 1.67% to 24.29% of total bird abundance in selected
transects. Transects with higher vegetative diversity and green cover sustained more native bird species in comparison to densely urbanized transects. Nesting activities of 21 bird species were observed during the study period. Blue Rock Pigeon was observed to breed throughout the year while Common Myna raised two broods during its breeding season from March to September. Blue Rock Pigeon was observed to be highly dependent on grains offered by people while Common Myna mostly fed on waste or natural food sources. Roosting time of Blue Rock Pigeon was found to be correlated to sunset time while the same was noted to be related to both sunset time and temperature for Common Myna. Study results suggested that planned urbanization incorporating vegetative diversity and green cover in urban areas may help sustain the diversity and abundance of native bird species and to counter overpopulation of invasive species.
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Citation
Navleen Kaur (2020). Impact of urbanization on bird composition and breeding biology of invasive bird species in Jalandhar (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.