During this time period, Kahl worked for various places including the National Audubon Society and Rare Animal Relief Effort.
Apart from his works, Kahl received a fellowship from the National Science Foundation in the 1960s and one from the American Museum of Natural History in the 1970s.
[2] For his post-secondary education, Kahl studied botany and zoology at Butler University and received a Bachelor of Science in 1956.
[3][2] As part of the Army, he conducted research on how radioactivity impacted nature in Oak Ridge, Tennessee, and Puerto Rico.
[2] While studying psychology and zoology at the University of Georgia, Kahl received a Master of Science and Doctor of Philosophy during the 1960s.
[8][6] During the early 1970s, Kahl worked for the American Museum of Natural History as a fellow before continuing his flamingo studies with an additional grant from National Geographic in 1972.
[13] Apart from his research, Kahl wrote and took photographs about wildlife for various publications including the Journal of Zoology, National Geographic and Behaviour.
[17] To conduct the test, the researchers covered a wood stork's eyes with ping-pong balls that were darkened to reduce the bird's vision.