Growth and change (physical)

Chicks grow into chickens, Birds and Beasts
Butterfly flutterby, Birds and Beasts
Four Seeds, Count me in
Five plump peas, Count me in
One, two, three a-learie, Count me in
Caterpillars only crawl, Harlequin
Growing, Me
Too big for my boots, Me
The biggest aspidistra in the world, Sonsense nongs
High hopes, Sonsense nongs
The farmer comes to scatter the seed, Someone's singing, Lord