Sandpiper behavior?

[Gary Brower]

All, 

This morning I was at CCSP Swim Beach and saw a couple of smallish calidrid sandpipers. They both seemed to pump their tails a lot. I don’t remember that kind of behavior (I really just don’t remember — it’s been a long time since I’ve seen some!)

Is that characteristic of calidrids in general, or of just one species? Or were they just trying to maintain their balance?

Thanks!

Gary Brower

Unincorporated Arapahoe County