Ducks flock to Extremadura thanks to its ricefields

Four new reservoirs linked to rice cultivation built in the middle basin of the Guadiana river in the middle of the 1990's have allowed various migratory dabbling duck species to significantly increase in number during the ...

How new species arise in the sea

For a new species to evolve, two things are essential: a characteristic—such as a colour—unique to one species and a mating preference for this characteristic. For example, individuals from a blue fish species prefer ...

A new toolkit for capturing how COVID-19 impacts crime

A new set of assessment tools shows promise in capturing how the COVID-19 pandemic affects patterns of criminal activity. Hervé Borrion of University College London, U.K., and colleagues present this toolkit in the open-access ...

Biological fitness trumps other traits in mating game

When a new species emerges following adaptive changes to its local environment, the process of choosing a mate can help protect the new species' genetic identity and increase the likelihood of its survival. But of the many ...

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