📣Dartford Warblers at highest numbers on RSPB reserves with 264 pairs in 2025. RSPB/BTO/NE Heathland Birds Survey estimated the national population at 4,100 territories - up from 3,200 in 2006 📈📈🐦🐦 @rspb.bsky.social @btobirds.bsky.social @naturalengland.bsky.social
www.rspb.org.uk/whats-happen...
