 The Madeira firecrest 's range consists of a single island , on which it appears to be fairly common to very common , although its population has not been evaluated . It is therefore classed as least concern on the IUCN Red List . It may be declining because of fragmentation and loss of native forest habitat , but its ability to occupy plantations of some of the non @-@ native tree species has ameliorated this factor to some extent . 
