From the National Wildlife Federation
Sung to the tune of "I Knew and Old Lady Who Swallowed a Fly"

daisy team:
There once was a daisy that grew on a plain.
Where the sun helped it grow, and so did the rain-
Links in a food chain

bug team:
There once was a bug who nibbled on flowers.
Nibbled on flowers for hours and hours!
daisy team:
The bug ate the daisy that grew on the plain,
Where the sun helped it grow, and so did the rain-
All:
Links in a food chain

wren team:
There once was a wren who gobbled up bugs,
And creepies and crawlies and slimies and slugs.
bug team:
The wren ate the bug, who nibbled on flowers,
Nibbled on flowers for hours and hours!
daisy team:
The bug ate the daisy that grew on the plain,
Where the sun helped it grow, and so did the rain-
All:
Links in a food chain

snake team:
There once was a snake who often grabbed birds.
And swallowed them whole, or so I have heard
wren team:
The snake ate the wren who gobbled up bugs,
And creepies and crawlies and slimies and slugs.
bug team:
The wren ate the bug, who nibbled on flowers,
Nibbled on flowers for hours and hours!
daisy team:
The bug ate the daisy that grew on the plain,
Where the sun helped it grow, and so did the rain-
All:
Links in a food chain

fox team:
There once was a fox, and I'll make a bet.
He'd eat anything he could possibly get.
snake team:
The fox ate the snake who often grabbed birds.
And swallowed them whole, or so I have heard
wren team:
The snake ate the wren who gobbled up bugs,
And creepies and crawlies and slimies and slugs.
bug team:
The wren ate the bug, who nibbled on flowers,
Nibbled on flowers for hours and hours!
daisy team:
The bug ate the daisy that grew on the plain,
Where the sun helped it grow, and so did the rain-
All:
Links in a food chain

last verse team:
The fox, he grew older and died one spring day,
But he made the soil rich when he rotted away.
A new daisy grew where he died on the plain.
The sun helped it grow, and so did the rain-
Links in a food chain.