is 921.60 KB, has a resolution of 1600x1236 pixels and was uploaded on January 7, 2020 @ 1:31 am by user: tobiein. It is filed under the tags: flightless bird, skeleton, evolution of birds, hesperornithes, bird. Click the blue button at the top to freely download: Bird Hesperornis Ichthyornis Hesperornithes Penguin png.