Feeding frenzies and resurgent glowworms among UK wildlife highlights in 2023

Conservationists celebrated findings but warned that species and habitats are in overall decline in Britain

Spectacular feeding frenzies of Atlantic bluefin tuna, surging numbers of glowworms, and a record-breaking breeding season for pied flycatchers are among the British wildlife highlights of 2023.

But conservationists warned that overall wildlife continued to decline, with one in six species at risk of extinction - and that wildlife was being challenged in new ways by global heating, disease and other destructive human activities.