Country diary: In pursuit of the elusive Dartford warbler – a true bird of mystery

‘I finally see a fleeting glimpse of its long tail, dark grey back, russet breast and bright red eye ring as it dives into a nearby gorse bush.’ Photograph: Mike Lane/Alamy

The constant droning of the nearby road fights against the increasing wind gusts as I venture further on to the heath. As sirens blast out in the town below, stonechats zip from gorse bush to gorse bush, and southern wood ants, otherwise known as red wood ants, rampage across the sandy paths.

It’s an overcast but mild day. I’ve decided to come for an afternoon walk at Canford Heath nature reserve near Poole in Dorset. The site covers more than 344 hectares (approximately 850 acres) – one of the largest remaining heaths in Dorset. UK lowland heathland is an incredibly important habitat, now rarer than tropical rainforest due to its degradation and destruction, with only about 16% left of the area that existed in 1800.