An accentor is a genus of European birds, Latin name Prunella, which includes the hedge warbler.

It is also a musical term for the person who sings the leading part.

Flora Fauna Mountain pine Golden eagle Stemless gentian Alpine accentor Alpine dwarf orchid Alpine marmot Alpine pasquil-flower Tengmalm's Owl Alpine rock-jasmine Alpine Salamander

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern A--EN-OR. That is, eight letter words with 1st letter A and 4th letter E and 5th letter N and 7th letter O and 8th letter R. In alphabetical order, they are:

accentor

assentor

It really does depend on which dictionary you are using.

The Anhigha (Darter) bird would be amongst the first in a dictionary of bird species. But the Alpine Accentor beats that! However, the the more widely known Albatross beats both of those to first place!

Small passerines - goldcrest, firecrest, wren, robin, blue tit (chickadee in the US), great tit, long-tailed tit, house sparrow, tree sparrow, hedge sparrow (accentor), chaffinch, greenfinch, siskin, redpoll, lesser redpoll, etc etc etc etc - all are no bigger than a house sparrow