WREN (Troglodytes, troglodytes)

Common resident.

The 1973 Breeding Atlas confirmed breeding from seven tetrads covering Stevenage, from all eleven in the 1992 Atlas and, from five in the 2012 Atlas.

They suffer badly in cold weather, and during the winter of 1962/63 the Hertfordshire population was reduced by as much as 75%, and during the winter of 1981/82 by about 50%. 

The 2012 Winter Atlas confirmed their presence from all 11 of the tetrads covering Stevenage.

In 1951 a nest was found in old allotments behind Fairview Road, in an old ammunition box hanging in a low bush (there had been an anti-aircraft gun on the site during the Second World War). 

25 were ringed in Box Wood in 1978. A juvenile ringed in the Wood on 19 July 1981 was killed by a Cat later in the year.

At Watery Grove the Common Bird Census recorded Wrens as holding breeding territories every year between 1972 and 1990, with a maximum of 12 territories held in 1993. During that period their population in the wood increased, particularly after a large area was coppiced, and brashings were left on the ground, leaving a habitat they could exploit.