Facing front while looking back then turns around to show its back as it repositioned, Grey-rumped Treeswift Hemiprocne longipennis, Kaeng Krachan National Park, Thailand

greyrumped treeswift broadbill birds of thailand kaeng krachan national park habitat nestlings apodiformes grey throat swifts branch birds perch nesting hemiprocne longipennis branches twigs wildlife myanmar hemiprocnidae canopy malaysia breeding tropical mangrove flying lowland forest black feathers trees phanoeng thung natural habitat feathers nature small montane philippines sky thailand hemiprocne jungle rainforest forest crest green blue pylons brown tropical rainy season black green bokeh