Sexing Grey Tree Frogs

2 grey tree frogs, dont know male or female or know how to tell. If somebody could help me out it would be very appreciated :) (i put male and female in my signature bcuz 1s name is waldo and they other is wenda) thanks :)

The skin color of their throat is a good indicator of gender. I "think" a bare white throat indicates female and the dark throats are males. You typically find many more males then females because the females are pretty quiet. We usually find a 15:1 ratio of males:females in VA.