The three-spined stickleback (Gasterosteus aculeatus) is a small fish made particularly famous by the studies that Niko Tinbergen carried out on it, so much so that it is considered a true icon of the behavioral sciences. Certainly, on the same level of Konrad Lorenz’s geese and Karl von Frisch’s bees, […]
N. Emilio Baldaccini
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The Wren (Troglodytes troglodytes) is a small, plump, finely striped brown bird, with a proud and impertinent appearance that does not reach 10 centimeters in length. The short tail is constantly held up, helping to give it a vague brawler-like air. If its song is decidedly strong and melodious, with […]
Usually, the bird’s nest is a construction with specific characters aimed at reproductive behaviour. It is often found in the male’s territory and can thus be the center of its activities in every season. Other times it is something ephemeral, done just to lay eggs, hatch them and then leave […]
Eels grow in the fresh waters of rivers and lakes but reproduce in the oceans. Several species are known, all very similar to each other, both in the Atlantic and in the Pacific, capable of moving for thousands of kilometers, with migration systems that are among the most complex that […]
Mammals are animal species that have evolved from pre-existing reptiles in the terrestrial environment, undergoing extraordinary adaptive radiation [1]. But the lands are surrounded by seas, extremely productive ecosystems [2], and biodiversity that is unmatched on land. Thus some groups of them have started, in remote geological eras, a process […]