356 



Frogs of the Okefinokee Sivamp 



Slowly the distended parts sink in as the vigorous sounds proceed. Then the 

 throat and sides swell out again, and there follows another explosion of sound. 

 And so on over and over. ..." 



Overton (1914, p. 37) writes of the green frog call as follows: "Its song is 

 an explosive note resembling that made by plucking the string of a bass violin. 

 It swells out its throat and cheeks during its song." 



A resume of the croaking for 192 1 and 1922 follows: 



1921 

 Entered swamp. 

 One male croaking. 

 Heard one or two lone males. 

 An occasional male calling. 

 One or two calling at 9:30 p. m. 

 Tried to photograph a few calling males. 

 One or two calling tonight. Air 70° 

 Green frogs croaking. 

 Quite a few calling 10:00 p. m. Air 77°. 

 Several calling. 

 An occasional R. clamitans. 

 Hear green frogs. 



Hear no end of green frogs. Hear some in the forenoon. 

 Green frogs croaking their greatest. 

 Mainly green frogs calling in some ponds. 

 Several green frogs calling. 

 Many calling and several egg masses. 

 Great chorus last night. 



Green frogs are now croaking in real earnest. 



In east side of swamp no end of Rajia clamitans in early forenoon. 

 Hear green frogs. Eggs found. 

 Last record we made for calling. 



1922 

 We encamped. 

 First green frog heard. 

 Hear a few in cypress pond. 

 Hear several. 

 One heard in cypress bay. 

 At 6:00 p. m. several calling. 

 One or two heard 7:00-9:00 a. m. 

 In early forenoon commonly heard in cypress bay. 

 One heard near camp. One heard about 2 :oo p. m. 

 A few in bay. 



Heard a few in center of swamp. 



Heard a few on St. Mary's River at Camp Pinckney. 

 Hear several. 

 Still calling on prairie. 

 One calling in mid afternoon. 



When temperatures range in maxima 8o°-88° and minima S9°-^7° they 

 begin sparingly but when maxima reach 90° or more and minima 68°-75° they 

 begin to reach chorus stage, e.g., in 192 1 the choruses were greatest from July 

 2-1 1 when the temperatures were: maxima 88^-94°, average over 90° and 

 minima 69°-74'', average 70°. 



