Ecola State Park
Ohio
13Aug2021
Pacific Wren
Troglodytes pacificus 
(L 4.75" WS 6" Wt 0.39 oz)
Troglodytes in Greek
means
cave dweller.
© Audubon
Society
© Wikipedia
© BirdNote,
Todd Peterson
When singing they hold their tail
upright and their entire body
shakes with sound.