When the frosty nights get here, give a thought to our little garden friends. Bird boxes that were used to raise families in the spring, can become safe and warm roosts for our tiny birds like wrens, 100 of which have been recorded huddled together to keep warm. Though your nest box will likely accommodate less birds, it could be an important retreat from the cold. However most old bird boxes contain fleas and other parasites, which can remain in the nest through the winter and into the following spring. It’s therefore important to remove old nests and clean out nest boxes in autumn and before the frosts get here! Give birds a home is our sixth pledge for wildlife, see them all here.