Sin fronteras

Billions of traveling animals cross our planet from end to end. Small or large, alone or in a group, they travel tens of thousands of kilometers by flight, walking or swimming, facing difficulties and dangers that often cost them their lives. Book intended for all audiences, with an informative but well-informed scope and with scientific quality. In 14 chapters the book describes the immense variety of migrations carried out annually and cyclically by the different species of animals, and focuses on the genetic and conditioned learning mechanisms that allow navigation to arrive each year on specific dates to the places that allow them to reproduce in suitable conditions. By describing migrations as part of a global ecological mechanism, the author stresses that the gradual degradation of ecosystems (pollution, global warming, lack of rainfall, destruction of trophic chains, etc.) is forcing animals to vary their migratory habits seriously conditioning their chances of survival in the medium term.