Raptors have always fascinated mankind, owls for their highly sensitive vision, and eagles
for their high visual acuity. We summarize what is presently known about the eyes as well as …

The eyes of vertebrates show adaptations to the visual environments in which they evolve.
For example, eye shape is associated with activity pattern, while retinal topography is …

With predation and carnivory as catalysts, the first known eye appeared in a trilobite during
the Cambrian explosion approximately 543 million years ago. This period was a crucible of …

It has previously been shown that platypus are sensitive to small electrical fields. It was
predicted that platypus use their electrosensitivity to locate the source of foodstuffs on the …

Since 1813, when Crampton first described the ciliary muscle of the avian eye, there has
been little agreement on how birds are able to change the focus of their eyes. Numerous …

The binocular field of vision differs widely in birds depending on ecological traits such as
foraging. Owls (Strigiformes) have been considered to have a unique binocular field, but …

We have investigated the role of ocular accommodation in the distance estimation during
pecking in the barn owl (Tyto alba). Owls were trained to peck at pieces of food presented on …

Birds of prey, also collectively known as raptors, consist of the Falconiformes (falcons and
caracaras), Accipitriformes (eagles, buzzards, hawks, kites, and Old World vultures) …

We have studied the development of the refractive state in young barn owls (Tyto alba
pratincola). Strikingly, the eyes had severe refractive errors shortly after lid opening (which …

We have used a scanning laser technique to measure in vitro changes in back vertex
distance of chick and pigeon lenses. Enucleated eyes were dissected, leaving the lens …