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Rare swallowtail sighting thrills butterfly lovers. Video, 00:00:34Rare swallowtail sighting thrills butterfly lovers

The minders with their eyes on a city's peregrines

Swan trapped in drain for hours rescued by charity

Bridges erected for bison roaming Kent countryside

Nature fans urged to look out for glow worms

Deer culls credited with green loch wood recovery

Colorado wildlife officer frees bear from car. Video, 00:01:06Colorado wildlife officer frees bear from car

Caution urged over countryside fire risks

Freshwater mussels breed for first time in 13 years

Two dolphins returned to sea after beach rescue. Video, 00:00:32Two dolphins returned to sea after beach rescue

Beached dolphins returned to sea in major rescue

Osprey chicks hatch for 10th year running

'Influx' of hedgehogs injured by garden strimmers

Anniversary celebrates Coronation Meadow's growth

Wildfire causes extensive damage to nature reserve

Rainforest-inspired tiny woodland hailed a success

Pine marten has 'phenomenal resurgence' across NI

Overgrown grass verge sparks safety fears

Eurasian lynx pair settle into new home

Beachgoers warned to stay away from seals

Fire warning after nature reserve blaze

´óÏó´«Ã½ Inside Science. The benefits and problems of eDNA. Audio, 31 minutes´óÏó´«Ã½ Inside Science