SEVEN AMERICAN BIRDS PARTICULARLY AT RISK OF COLLISION WITH BUILDINGS

Black-and-white Warbler

AMERICAN Bird Conservancy has named seven species which it believes to be at particular risk from colliding with tall buildings.

The organisation says up to one billion birds are killed each year after colliding with buildings, especially those that are illuminated after dark.

Artficial light at night is thought to increase the peril. Many migratory species travel under the cover of darkness, guided by stars, and become disorientated if these celestial cues are 'drowned out'.

The seven species on the list are:

* Black-and-white Warbler

* Hermit Thrush

* Brown Creeper

* Dark-eyed Junco

* Common Yellowthroat

* Ovenbird

* White-throated Sparrow

ABC is running a campaign which urges all non-essential lights to be turned off between 11pm and sunrise, especially during migration season.

Photo: William Majoros via Wikimedia