Fig. 4
From: Species delimitation within the Glaucidium brodiei owlet complex using bioacoustic tools
a Upperparts and b underparts of pardalotum (1907.12.12.115), brodiei (86.2.1.683) and borneense (93.6.21.1) specimens, respectively, from the Natural History Museum at Tring, UK. c Upperparts of specimens from the Lee Kong Chian Natural History Museum, Singapore. First four specimens from left are brodiei (ZRC3.8606, ZRC3.8607, ZRC3.8610, ZRC3.8612), second from right is sylvaticum (ZRC3.8604) and rightmost is borneense (ZRC3.8603). All specimens show mainland brodiei has a rufous neck collar in contrast to the white neck collar in Sumatran sylvaticum and Bornean borneense