A.M. Verbeek 1966. Calidris canutus (1) 13 June Two birds fed in a saturated quarry meadow. I could only get to about 100 m. from them and they would fly away. Apparently two birds were present in this general vicinity last year. 15 June When I got to the drum area, just behind our laboratory I heard a sound which I could not identify. About an hour later the same sound came from overhead, and it appeared to be made by the Knot, which Paul de Benedictis identified. The bird flew at about 150-200 m above us, the male following the female (I guess). At times both birds would glide, but the male glided more. During this gliding the male repeatedly made the following song: (ooo eee) (ooo eee) (ooo eee) ooo as in book eee as in lek The song appeared as a sine wave ~~~ and was uttered (in one case) 18 times in 30 seconds. At times it was interrupted by tweec-t, tweec-t, notes, which were delivered in a stretched out manner. Later on in the day I made some feeding observation, in wet marshy (saturated) places. The birds made soft call notes (when they got too far away from each other?) which sounded like tititi (very soft and mellow) 16 June A single female feeding along side the road in the meadow at the Britton Area. 19 June Saw a single bird, probably a male, feeding along the gasoline mot [illegible] from where it branches to go to the Radar site. I probably heard this bird earlier as it called it "not-not"