This species is known as the “King of Birds” due to its fiery crown, even though it is the smallest bird in the United Kingdom.

The wren is a small passerine bird in the family Regulus regulus. It is the smallest bird in Britain, measuring only 3.3 to 3.7 inches in length, far surpassing all other birds in Europe. 

The olive-green uppersides and white undersides of the golden crested are adorned with two white wingbars. The male’s head has a narrow black front, black sides, and a vivid orange-yellow crest on top. The beak is jet black and the legs are a rich brown hue.

 Other from the color of the crest—females have a yellow crest—there is not much variation between the sexes.

With the exception of their duller upperparts and lack of a colorful crown, juveniles resemble adults in appearance.

Many subspecies have been identified over a wide range of geographic areas, including most of the Palearctic and the islands of Micronesia and Iceland.

For the habitat and breeding season of this bird, woodlands with a mix of trees and shrubs are best. In addition, while it is not reproducing, it favors living among deciduous trees and shrubs.

Insects and spiders that live in trees are the main foods consumed by goldcrests. It forages for insects and seeds, which make up the majority of its winter diet. Because they consume a lot of spiders and insect larvae, the young of this species mature swiftly.

Due to its enormous range, this species does not approach the Vulnerable thresholds, even though its population has been declining recently.