Widespread and abundant in much of North America, the introduced European starling is arguably and problematically the most successful bird on the ... from nest holes. Migration: withdraws in ...

If birds left tracks in the sky ... were drained around 1950 for agricultural use and restored in 2005. “In winter the starlings gather in large groups,” says Bou, who took this photo in ...

The bird, which is marginally smaller than a starling, visits the UK throughout ... birds begin physically preparing for migration well in advance of the journey. They start to eat more and ...

Bird migration is thought to depend on gonadal ... when Danish teacher Hans Christian Mortensen visited European starling (Sturnus vulgaris) nests and gave each nestling an aluminum leg band ...

The word migration describes how birds fly thousands ... Many large birds migrate by day, but many smaller birds such as starlings migrate mostly at night. The cooler and calmer night air means ...