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Comparative Effectiveness of Repellents for Rose-Ringed Parakeet and House Crow at University of Agriculture, Faisalabad, Pakistan
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Comparative Effectiveness of Repellents for Rose-Ringed Parakeet and House Crow at University of Agriculture, Faisalabad, Pakistan
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Comparative Effectiveness of Repellents for Rose-Ringed Parakeet and House Crow at University of Agriculture, Faisalabad, Pakistan
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Journal Article
Comparative Effectiveness of Repellents for Rose-Ringed Parakeet and House Crow at University of Agriculture, Faisalabad, Pakistan
2026
Overview
Present paper provides information on the comparative effectiveness of the three repellents: mist nets, reflecting ribbons and distress sound player with respect to the five economically significant crops viz. maize, chickpea, sugarcane and sunflower for the two birds, Psittacula krameri and Corvus splendens at the mature crop stages. Mist nets are considered physical barrier on the various crops to maximally deter their damage and, therefore, act as the potential repellents against the birds. Present study was conducted from January through December, 2021 to determine the movements patterns of the rose-ringed parakeet and house crow impacted by the repellents at the students' farms of the University Campus. Observations were recorded in the two one-acre crops for eight hours, four each in the morning and afternoon durations, 05:30-9:30 am and from 13:30-17:30 pm, respectively. They were further differentiated for period of 30-min in the two observations hours for the controlled and repellent treated conditions. Apparently, the two crops, sunflower and maize, were significantly damaged by the rose-ringed parakeet in the controlled conditions. They depicted their means 506.43±2.54 and 537.57±5.52. Nonetheless, in the repellents treated conditions, the means were 242.29±4.95 and 273.14±5.86. Mean damage recorded for the crows in controlled conditions for the sunflower was 510.86±7.11 and for maize it was 464.43±3.20. It was, therefore, evident that the repellents sufficiently reduced the numbers of attacking birds on all the crops. Conclusively, the non-chemical measures should be considered obligatory in agriculture to decrease not only the bird depredations but also to maintain the ecosystem sustainability.
