Las golondrinas regresan mejor a casa si van en grandes bandadas

In Nacional, a notable phenomenon occurs among golondrinas, also known as swallows, at the end of summer. After raising their young, these birds prepare for their next move. It is observed that they tend to return home in large groups.

Further information on this topic can be found in El País, which provides more details about the behavior of these birds and their annual patterns, including the arrival of other species such as vencejos.