One is a creeper who's sleepy in his shell
Two is a hopper and he hops very well
Three is a flopper and his flippers flap
Four is a jumper with a jump-in lap
Five is a drinker with a dip-in nose
Six is a flapper with flippers on his toes
Seven is a tapper with a tripper in his beak
Eight is a nutter with a nut sack in his cheek
A pelican, whose bill can hold up to three gallons of water: 

Guess