The bird pecten oculi is an intraocular anatomical structure that has resisted 350 years of investigation into its function, generating something like thirty different hypotheses, without any of them being completely accepted and considered exhaustive. And the mystery continues… Image 1 gives us a schematic view of the eyeball of […]
N. Emilio Baldaccini
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In birds, fertilization is an action of… tightrope walkers: the female, after a suitable period of courtship, decides to stop by crouching on the ground, lets the male climb on her back, waddling in precarious balance until in an instant, having achieved the necessary coordination, the two bring their cloacal […]
Birds are the masters of the air and their spatial navigation capabilities are well known. No less so are some marine organisms, such as turtles, tuna, eels or whales capable of migrating across the oceans, following routes that extend for thousands of miles. Recent research done with Federica Maffezzoli and […]
The geomagnetic field as a source of directional information The Earth, due to its constituent characteristics, is comparable to a huge magnet. We live like this, like it or not, immersed in the lines of force of its magnetic field. These envelop our planet starting from a point close to […]
That animals knew how to use the sun to guide their large or small movements was the first important acquisition in the field of orientation towards a defined destination (migration and homing).Felix Santschi, a doctor who moved from Switzerland, operated in Kairouan, Tunisia in the early 1900s. With simple field […]