Nesting habits of the Baya Weaver Ploceus philippinus (Linnaeus, 1766) in the agricultural landscape of Tindivanam, Tamil Nadu, India

Abstract

This paper pertains to the nesting habits of Ploceus philippinus (Linnaeus, 1766) with specific reference to the agricultural landscape of Tindivanam Taluk, Villupuram District, Tamil Nadu during the breeding period between April and October 2021. A total of 11,386 nests (wad stage-840, ring stage-478, helmet stage-3,980, egg-chamber closed stage-2,865, completed nests-2,028, abnormal nests-938, and damaged nests-257) and 12,600 birds were observed on 832 nest-supporting plants. Nest-supporting plants belonged to 27 species, 26 genera, and 17 families. The three principal nest-supporting palm species—Borassus flabellifer, Cocos nucifera, and Phoenix sylvestris—represented 85.21% of the total nest-supporting plants. The number of nests (including all the stages) per colony varied from 1 to 109 and 70.16% nests were oriented towards the east. Abnormal nests constituted 8.24% of the recorded nests with 17 variations and 90.12% helmet stage nests contained plastering of clay on the inner walls. Nest predation by House Crow, Large-billed Crow, Asian Koel, Black Drongo, & Rufous Treepie and killing of adult Baya Weaver by Shikra were recorded.