Bird Monitoring at Whiteleaf & Brush Hill

Published on May 8, 2019

With the help of a dedicated team of volunteers, we have been monitoring bird boxes on Whiteleaf and Brush Hill for the past 4 years as part of a British Trust of Ornithology (BTO) monitoring scheme. The boxes are primarily inhabited by Great Tits and Blue Tits, and since March the team has been busy checking the boxes around the reserves on a weekly basis to see the progression from the nest building, to eggs, to chicks hatching, ringing and eventually fledging. All of the chicks and some adults are ringed by Dave Short and the 4 trainee ringers (Rachel, Robyn, Veneita and Paul) before being ‘posted’ safely back into the nesting boxes. So far this year, out of the 35 boxes installed on these two reserves, 22 have either eggs or chicks present, indicating a healthy population of tits within the sites. Raptor boxes for larger birds such as barn owls and kestrels have also been placed across Whiteleaf Hill – although previous years have seen the intended birds nest in these larger boxes, only squirrels and stock doves have been found so far this year!

The group also carry out mist netting 3 to 4 times a year, to investigate the wider bird population on the sites. Here fine nets, that are hard to spot with even human eyes, are set up in a clearing at dawn, into which a huge range of birds fly into including Dunnocks,  Jays and Woodpeckers. The birds are then measured, weighed and ringed, and the results are sent to the BTO as part of the wider UK monitoring scheme, this also includes all ringed at the nest boxes. These results are then kept by the BTO for nesting and population trends in the area and also longevity of the birds.