Wrens are dumpy, restless little birds that are readily recognizable by their plumage which is a deep brown colour. Their upper parts and sides have dark bars whilst their pale eyebrows are prominent. This dumpy little bird also has a fine bill, long legs and toes with a voice that is surely too loud to come from such a small body. It also has a short tail that it flicks incessantly. The Wren, though tiny, is still heavier and by no means as slim as the goldcrest. The Wren is the most common breeding bird in the British Isles. It does, though, suffer declines during severely cold and long winters.  

The juvenile Wren looks similar to the adults although their eyebrows are not as prominent.

In flight The Wren’s wings oscillate very rapidly and they travel at speed, generally in a straight line, before gliding into land when their wings become rounded and their tails are spread.

Wrens feed on insects and spiders which they find while hopping along the ground, occasionally adding small seeds or even cheese to their diet from a bird feeder. Wrens will use open-fronted and tit nest boxes, both for nestingand winter roosting (up to 60 have been recorded in one box).

The male bird constructs several globe-shaped nests in holes in walls, banks, trees, or old nests from leaves, grass and moss. When the female has chosen a nest, she lines it with feathers.

The smooth, glossy eggs are white with reddish spots, and about 16 mm by 13 mm. Incubation is by the female only.