Wren (Original Words By Shel Silverstein) Wren (song, call) Wren (Troglodytes troglodytes) Wren (Troglodytes troglodytes), CU song, Chiffchaff and other bi Wren (Troglodytes troglodytes), CU song, distant Blackcap, Wren, Wren (Troglodytes troglodytes), MCU alarm calls, distant House S