The marsh wren is a small brown wren with darker wings and back, a dark cap on its head and a thin white line extending through its eye. It has a long thin bill which is slightly down-curved.

The Carolina Wren, Thryothorus ludovicianus is a small reddish-brown wren that loves yards and neighborhoods. Wrens tend to skulk and conceal themselves, so you might not see them too often!

BBC Earth - For such a small bird the wren has a remarkably loud voice (Image credit: Andrew Darrington / Alamy Stock Photo) - BBC Sounds. From: BBC Earth.