Why are dogs and horses popular as play animals and not birds? Chickens in particular.
I’d have a lot of fun with a little man dressed in a chicken mask. I’m less fond of pigeons but that would work too.
Once you got him into the chicken mask, consider white wings too. Likely you could find some white angel wings at a costume shop. But, adding floppy chicken feet would be a great extra – if you can find them. Still, start with the mask.
Keep in mind, the mask is likely to get hot. So give your chicken boy plenty of water to peck at.