I find myself wondering if you can intuit emotion from motion. The way a crow flaps, they look insouciant just moving away from you, or scoping out a field. Ducks and geese flap with a kind of desperation I completely sympathize with – it looks like their wings barely have enough lift to keep them aloft. Hawks look faintly impatient as they circle and wait for dinner to show itself.
Some birds look less emotive flying. Blue herons look impossibly ungainly and deeply prehistoric.