On the final day of 2011, I participated in the Elkhart Christmas Bird Count, birding with several others at Oxbow County Park. Our group had to leave by noon, but we tallied 24 species during our hike. When we were in a wet wooded area with lots of downed logs, I thought we had a good chance of finding a Winter Wren, so I played the Winter Wren song on our iPod. Shortly after the song began, we heard the clear, ringing "teakettle-teakettle-teakettle" of a Carolina Wren (Thryothorus ludovicianus). A few seconds later, we were looking at a pair of Carolina Wrens, interested to see what all the Winter Wren commotion was about.
Later on our hike, we did see a Winter Wren as well; our other highlight was a Yellow-bellied Sapsucker... a nice end to the year.