Seen from its back while its looking around for some prey to eat, Grey-rumped Treeswift Hemiprocne longipennis, Kaeng Krachan National Park, Thailand

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