1. Locality—tree: bush: ground.
2. Size—compared to robin: English sparrow.
3. Form—long: short: slender: plump.
4. Beak—high: stout: wide: hooked: long: lobes: drawn down.
5. Tail—length: shape at end.
6. Legs—long: short: scales.
7. Toes—webbed: how turned: hind claw long.
8. Color—bright: striking: dull: plain.
9. Markings—on head: breast: wing: tail: back.
10. Manners—walk: hop: quiet: active: noisy: silent.
11. Habits—eating seeds: berries: insects: from ground: tree trunk: leaves.
12. Song—long: short: continuous: broken.
13. Flight—direct: undulating: fluttering: labored.
14. Nest—where placed: shape: materials: eggs.
15. Young—plumage: behavior.