https://open.abc.net.au/explore/60107

https://www.indonesiatravelmagazine.com/tyto-longimembris-3/

http://animal.memozee.com/view.php?tid=3&did=25559

https://romyocon.wordpress.com/tag/tyto-longimembris/

https://www.tonjiandsylviasbirdlist.com/Birds-of-the-Philippines/Barn-Owls/Grass-Owl/i-66QXRNs

https://mdahlem.net/birds/13/grassowl.php

https://www.tonjiandsylviasbirdlist.com/Birds-of-the-Philippines/Barn-Owls/Grass-Owl/i-HjMZMHw

http://www.abc.net.au/local/photos/2013/11/26/3899447.htm

https://www.pinterest.com/pin/386042999282404150/