Flight: a large dark bird that flies with its wings held in ... but at closer range all have feathered heads and different wing shapes. Zone-tailed also shows banded tail and yellow cere and ...

Bird wings and legs evolve independently, while bat wing and leg proportions are integrated. Credit: Nature Ecology & Evolution (2024). DOI: 10.1038/s41559-024-02572-9 ...

Prominent black crescent framing lower edge of auricular. On perched bird, wing patch shows only as a thin white line along the leading edge of the folded wing. Adult male: grayish or grayish ...