How do they differ?
Compare feathers, bills and feet of chickens and crows.
Look for crow tracks in the snow. Where have you seen them? Can you always tell which way the bird was going? How? Sketch the tracks on separate sheet.
How long is the longest toe, including the claw? Which toe is this?
Is the track ever longer than the toe itself? If so, why?
Have you ever seen the scratches in the snow made by the stiff wing feathers when the crow takes its flight from the ground?
Count the scratches.
What food have you seen crows eating?