1. AMPHIBIAN VOICE

2. Chorus Formation
As spring rains , temperature, and daylight hours increase males become active and congregate at breeding sites
Initial males begin calling and attract more males
As the chorus increases females are attracted to the site

3. Advertisement Calls
Male advertisement calls are used to attract females for mating (and maintain spacing from other males)
Larger males become the ‘chorus masters’

4. Short Range Calls
As females approach their chosen mate both male and female may make some ‘Courtship calls’ to invite ‘amplexus’

5. Other Calls ‘Release calls’ by females or mounted males
‘Distress calls’ when frightened or captured by a predator

6. Paleobatidae (Archaic Toads)
Plains Spadefoot Toad
Spea bombifrons

7. Bufonidae (True Toads)
American Toad
Bufo americanus

8. Hylidae (Tree Frogs)
North Cricket Frog
Acris crepitans

9. Gray Treefrog
Hyla chrysoscelis

10. Western Chorus Frog
Pseudacris triseriata

11. Ranidae (Aquatic Frogs)
Plains Leopard Frog
Rana blairi

12. Bullfrog
Rana catesbiana

13. Microhylidae (Microhylid Frogs)
Great Plains Narrowmouth Toad
Gastrophryne olivacea