The wren is a little passerine bird. It is the smallest bird in Britain and outshines all other European birds at 3.3 to 3.7 inches.

Golden cresteds have olive-green uppersides and white undersides with two white wingbars. The male’s head features a dazzling orange-yellow crest, black sides, and a thin black front. He has jet black beak and deep brown legs.

Sexes differ only in crest color; females are yellow. Youths resemble adults but lack a colorful crown and have duller upperparts.

Several subspecies have been found in the bulk of the Palearctic, Micronesia, and Iceland. For breeding and habitat, this bird prefers woodlands with trees and bushes. It also prefers deciduous trees and bushes when not reproducing.

Goldcrests eat tree-dwelling insects and spiders. The winter diet is mostly insects and seeds found during foraging. Young of this species mature swiftly because they feed spiders and insect larvae.

The female builds a tiny, three-layered nest on a tree branch to lay her eggs. The cup-shaped nest is made of twigs, cobwebs, and moss. It incubates 10–12 eggs for 15 days under feathers and hair. He helps feed the chicks once the eggs hatch.

Despite its population decline, this species is not Vulnerable due to its vast distribution.