Remsen, J.V. 1975 Upland Sandpiper Bartramia longicauda May 10 Jumbo Res. Logan Co. Colo.: 3 in wet grassy meadow at state wildlife area s. of reservoir. Song: a trilling whistle which accelerates up the scale (~1 1/2 seconds) followed immediately by a clear, untrilled whistle which goes back down the scale (1 sec): "" + wheeeeeee untrilled whistle "" trilled whistle +++++++++ Somewhat like a slowed-down "wolf whistle".