This Long-billed Marsh Wren (Cistothorus palustris) produced a rattling churrr that carried a surprising distance. With each call, other wrens in nearby stretches of march responded with equally vigorous sounds. The birds appeared to be having a discussion in an alien, but melodic voice.
Canon Rebel T1i (500D)
Canon EF 300mm 1:4 L IS USM
Canon EF 1.4x II Extender
420mm, 1/500 sec, f / 8, -1/3 EV, ISO 100
Reifel Bird Sanctuary, Ladner, BC
28 Apr 2010