Feeding bluebirds helps fend off parasites

If you feed the birds in your backyard, you may be doing more than just making sure they have a source of food: you may be helping baby birds give parasites the boot.

The shark network—exposing the social lives of sharks

Researchers have shown for the first time that sharks show very strong preferences for particular individuals in their social networks over years and prefer to hang out with other individuals of the same sex and size, in ...

Florida takes aim at cat-eating African lizards

A cat-eating lizard native to Africa is being targeted by Florida state wildlife officials who say the creatures, known as Nile monitors, could be dangerous to pets and people.

Testosterone regulates solo song of tropical birds

(Phys.org)—In male songbirds of the temperate zone, the concentration of sex hormones is rising in spring, which leads to an increase in song activity during the breeding season. In the tropics, there has been little evidence ...

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