Seen perched on a bare branch while looking around and moving its body a bird flying across, Grey-rumped Treeswift Hemiprocne longipennis, Kaeng Krachan National Park, Thailand

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