SENSORY ORGANS: VIEW OF OWLS

As many of you know, the sight of owls is particularly developed. The development of their vision system, however, is different from the diurnal birds of prey. In the latter, the view is developed towards a higher definition of images, thanks to a high concentration of cones in their fovea…

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INSIDE AN INSECT EYE

The eye of Insects is of two types: simple eyes or ocelli and compound eyes. Typically, the two types coexist, but one, the other or both may be lacking. The ocelli are divided into dorsal and lateral ocelli. The former normally coexist with the compound eyes and are three in…

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THE KILLER OF RIVERS

European Kingfisher (Alcedo atthis, Linnaeus 1758). As beautiful as fearsome, with iridescent blue plumage, this bird is actually the killer of rivers. His technique is simple and effective: it alights on a branch and carefully scrutinizes the water surface. Thanks to superfine view, it is able to polarize light without…

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