Microspectrophotometric (msp) measurements were made of retinal oil droplets of 15
species of birds from 5 orders. The droplets were assigned to six categories on the basis of …

The relative abundance and topographical distribution of retinal cone photoreceptors was
measured in 19 bird species to identify possible correlations between photoreceptor …

The cone oil droplets of 19 species of birds from 11 families were examined by
microspectrophotometry. Individual droplets were expanded with mineral oil, suspended in …

The visual receptors of the passeriform bird Serinuscanaria, the canary, have been
examined microspectrophotometrically and the sequences of the opsins determined. Rods …

Microspectrophotometric examination of the retinal photoreceptors of the budgerigar (shell
parakeet), Melopsittacus undulatus (Psittaciformes) and the zebra finch, Taeniopygia guttata …

The ganglion cell density of the quail's retina was studied in sections and whole mounts.
Two regions of high ganglion cell density were found, corresponding to an afoveate area …

Retinal preparations were made from the outer segments or whole retinas of 20 species of
birds. The oil droplets were extracted with petroleum ether, and the visual pigments either …

The peak optical densities (D p) of colored oil droplets in the retinal cones of the turtle,
Emydoidea blandingii, were found to range from 1.2 to 8.8 for yellow droplets, 3.2 to 11.4 for …

Avian vision probably represents the most highly evolved colour vision in the animal
kingdom. In this article an outline of the complexity of the retina of birds is given followed by …

Microspectrophotometric examination of the retina of a procellariiform marine bird, the
wedge-tailed shearwater Puffinus pacificus, revealed the presence of five different types of …