Does anyone recognize a 1950s kid's story or poem featuring a tiger who walks down the street saying I'm a hungry tiger I am I am with nothing to eat but strawberry jam?

Yes, the poem you’re referring to is "The Hungry Tiger" by the children's author and poet, A.A. Milne. It features a tiger who proclaims, "I'm a hungry tiger, I am, I am," while lamenting his lack of food beyond strawberry jam. This whimsical piece captures the playful and imaginative style characteristic of Milne's writing. If you're interested, you might find it in collections of his poetry or children's stories.