Re-joice, rejoice to welcome spring Down in every pond the froggies sing The peepers chime their clarion notes "Peeper-peeper-peep! Peeper-peeper-peep!" The wood frogs clear their throbbing throats "Creeker-creeker-creek! Creeker-creeker-creek!" "Plunka-plunka-plunk!" the green frog strums And the big bass bull frog "Chugga-chugga-rums!"
peeper (Pseudacris crucifer) call: peeper-peeper-peep [YouTube]
wood frog (Lithobates sylvaticus) call: creeker-creeker-creek [YouTube]
green frog (Rana viridis musicis) strum: plunka-plunka-plunk [YouTube]
bull frog (Lithobates catesbeianus) call: chugga-chugga-rum [YouTube]
peeper: features and name of the peeper [Lilly Center for Lakes & Streams]
wood frog: habitat and life cycle of the wood frog [Arlington, Va., Dept. of Environmental Services]
green frog: health and hobbies of the green frog [The Tonight Show Starring Johnny Carson]
bull frog: jumping abilities of the rental and professional bull frog [Journal of Experimental Biology]