The sound of a Greater Yellowlegs

I often see the Greater Yellowlegs along the shoreline or wading in the shallow water of our lake.  It spends much of its time hunting for tiny aquatic animals and insects that it captures with its long, slender black beak.

The other day while I was walking around the lake, I noticed the Greater Yelllowlegs in calling mode and decided to record its sound.  If you listen closely toward the end of the recording you will hear a faint response from another Yellowlegs that was wading in the water a short distance away.