Full Idea
When a bird pulls a worm from the ground, then swallows it piece by piece, there is a sense in which its behaviour can be said to be about the worm.
Gist of Idea
If a bird captures a worm, we could say its behaviour is 'about' the worm
Source
Robert Kirk (Mind and Body [2003], §5.4)
Book Reference
Kirk,Robert: 'Mind and Body' [Acumen 2003], p.104
A Reaction
This is preparing the ground for a possible behaviourist account of intentionality. Reply: you could say rain is about puddles, or you could say we have adopted Dennett's 'intentional stance' to birds, but it tells us nothing about their psychology.