 In 2004 , a captive yellow @-@ tailed black cockatoo and two free @-@ living tawny frogmouths ( Podargus strigoides ) suffering neurological symptoms were shown to be hosting the rat nematode Angiostrongylus cantonensis . They were the first non @-@ mammalian hosts discovered for the organism . A species of feather mite , Psittophagus calyptorhynchi , has also been isolated from the yellow @-@ tailed black cockatoo , its only host to date . 
