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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TO EACH ONE HIS BEAK!

Among the many stereotypes to debunk there is also the nutrition of the birds, considered frugal and thrifty. “You eat like a bird,” you says, generally, of a person who barely feeds. Birds, however, are great eaters, who eat frequently and abundantly, as they have a very accelerated metabolism that…

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WHO WEARS PANTS?

 Wattled Jacana – Jacana jacana  (Linnaeus, 1766) Who wear pants. We used to think that investing in the care of offspring is a female exclusive and that the courtship and reproductive behaviour of males are largely attempts to exploit the investment of resources for women. In some cases, however, the…

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IL MIO “ GIARDINO DEGLI UCCELLI ”

Da appassionato naturalista con una spiccata preferenza per l’avifauna mi diletto ormai da anni allo studio e all’osservazione degli uccelli. Ho girato in lungo e in largo gran parte degli ambienti naturali che il nostro bel paese ci offre affrontando non poche difficoltà (soprattutto climatiche) per riuscire a fare interessanti…

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MANGIATOIA IN MOVIMENTO

Studio sul sistema d’orientamento degli uccelli nel ritrovare una mangiatoia Riassunto Il presente lavoro illustra i risultati ottenuti da osservazioni effettuate in un giardino a Ponteranica (Bergamo), sulla capacità d’alcuni uccelli di ritrovare o meno una mangiatoia che viene continuamente spostata. Area di studio, metodi e risultati L’area di studio…

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A “REAL” DANCER

White Wagtail (Motacilla alba alba, Linnaeus 1758) The White Wagtail is present almost everywhere in Europe. It is a small bird, with slender and elegant shape, long on average 18 cm and weights 23 grams. It has thin paws and a long and slender tail; the livery is grey but with…

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ARDEIDAE

Grey Heron (Ardea cinerea, Linnaeus 1758) Ardeidae is a family of birds Ciconiiformes including 19 genera and about sixty species, widespread in all tropical and temperate regions of the world. Ardeidae includes birds commonly known as Herons, Egrets, Night Herons, Bitterns, Little Bittern, etc. Small, medium or large, the Ardeidae possess…

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