Sustained hovering, head stabilization and vision through the water surface in the Pied kingfisher (Ceryle rudis).
G. Katzir, D. Berman, M. Nathan, D. Weihs
This study shows pied kingfishers can hover without wind despite their size, with stabilized head orientation for prey viewing.
bioRxiv · Sep 7, 2018 · PreprintZoology