• (n.) A small European kinglet (Regulus ignicapillus), having a bright red crest; -- called also fire-crested wren.
European species of kinglet (q.v.).[1 related articles]
Fire'crest` noun (Zoology) A small European kinglet ( Regulus ignicapillus ), having a bright red crest; -- called also fire-crested wren . 
The firecrest (Regulus ignicapillus) is a small bird native to Europe, north Africa and Madeira. The head has an orange stripe and white markings above the eyes resembling eyebrows. It lives in woodland or scrubland where it eats insects. It is Europe's smallest breeding bird.
a European kinglet, Regulus ignicapillus, having a bright, orange-red patch on the top of the head.