Karl Shuker, a leading cryptozoologist, however has featured the BTM at length in his book Extraordinary Animals Revisited (2007).
Jonathan Downes (born 1959), English cryptozoologist, author, filmmaker, journalist, composer and singer-songwriter
Some cryptozoologists such as Ken Gerhard, and Mark A. Hall have expressed interest in Teratorns as a possible explanation of anecdotal sightings of very large birds in Texas and Illinois and popularly known as Thunderbirds.