http://www.cccoe.k12.ca.us/bats/protect.htm
https://www.brainpop.com/science/diversityoflife/bats/
http://www.atozkidsstuff.com/bats.html
http://www.sheppardsoftware.com/content/animals/animals/mammals/bumblebeebat.htm
https://worldbookonline.com/kids/home#article/ar830239