One of a great many advantages of forestation is the increase in bird species. With growing spruce forests the Goldcrest has now spread over most of Iceland and become a native here. Its main habitat is spruce forests as its main food source are aphids that suck sap from spruce trees. Goldcrests are usually non-migratory birds but little is known about their behaviour in Iceland. Some birds stay here the whole winter but whether part of them migrate is not known.
The warm and sunny summer here in the South was very favourable for breeding and a great number of Goldcrests can now be seen in forests in South Iceland.