You may hear the distinctive twittering call of a swift bird before you look up to see it flying above. Up to 35,000 Vaux’s swifts may gather in one site when roosting. Unfortunately chimney ...

Previously, scientists thought these birds and another bird species, known as swift birds, only remained aloft for many days at a time. SEE ALSO: 31 scientific societies just told Congress to take ...

Local bird experts are calling for the preservation of the swift population in Northern Ireland. Bird groups have recorded a 66% reduction in breeding swifts across the UK in the last 30 years.