Seen looking towards the back and around spying for some insects to be eaten, Grey-rumped Treeswift Hemiprocne longipennis, Kaeng Krachan National Park, Thailand

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