erne
Edam
epee
Erne, Also known as the sea eagle.
grackle # Any of several American blackbirds of the genus Quiscalus having iridescent plumage
Crane
grebe
ellipse
They're simply words with six letters beginning in e and ending in you.
emigrator
A water jug is usually "ewer." I realize that's only four letters. Perhaps it was plural.
wren
crane