Birders from across the country traveled to Marin County this month after a local resident recorded what is believed to be the first sighting of a Eurasian songbird on the North American mainland. The ...

The differences in the three wood warbler sub-species involve slight variations in plumage – with centrally located birds being browner and eastern birds sporting grayish feathers. Breeding and ...

The Eurasian bird — known as the willow warbler — was spotted at the Rodeo Lagoon in the Marin Headlands on Oct. 18 by William Legge of Mill Valley, the Marin Independent Journal reported. It’s ...

Since antiquity, humans have been fascinated by birds’ intercontinental migratory journeys. A new study from Lund University in Sweden shows that two areas in their genome decide whether a willow ...

(KRON) – A tiny bird — a willow warbler — shocked bird watchers by showing up in Marin County. Its appearance marks the first time the bird has ever been seen in California — or even the lower 48 ...

Researchers at Lund University in Sweden have studied flight routes to determine how far willow warblers migrate in the autumn. The results show that the willow warbler holds a long-distance migration ...

Researchers have studied flight routes to determine how far willow warblers migrate in the autumn. The results show that the willow warbler holds a long-distance migration record in the 10-gram weight ...