28 THE ESSEX NATURALIST. Ringed Plover (Charadrius h. hiaticula L.). Identified during all visits. A party of about a hundred was seen, 3/8/25, and another containing several hundreds, in various stages of plumage, 18/9/26. Apart from these flocks no striking gatherings were seen, and during some of the winter months the plover was almost uncommon. This evidence suggests that there is a passage movement about August and September. Golden Plover (Charadrius apricarius L.). The call was heard repeatedly from Ray Creek, 12/12/26. Probably a stray bird on the mud. This only record shows how pronouncedly absent the species was during my period of observation. Grey Plover (Squatarola s. squatarola (L.)). Identified during all visits except those in May-June, and August. Generally only a few single birds seen, but a party of forty-five was seen on Ray Creek, and a number on Colne Point, 18/10/25. From my obser- vations in this area this species has a preference for the open coast, as its favourite haunt was between Colne and Sandy Points. Turnstone (Arenaria i. interpres (L.)). Colne Point, ten, chiefly in breeding plumage, 3/8/25 ; two or three, 19/9/25 ; about twenty, 18/10/25 ; five, 21/11/25 ; eight, 4/4/26. Ray Creek, two, 18/9/26 ; one, 14/11/26. Sanderling (Crocethia alba (Pall.)). Colne Point, party of eight immature birds, 3/8/25. Knot (Calidris c. canutus (L.)). Colne Point, one in breeding plumage, 3/8/25. Ray Creek, party of about thirty, 17/10/26. Dunlin (Calidris alpina (L.)). Identified during all visits except that of May-June, 1926. On 10/4/25 it was still numerous, and on 4/4/26 large flocks containing some hundreds, many in breeding dress, were seen. On 3/8/25 only one was seen ; it was in full breeding plumage. On 18/9/26 the birds were seen in various stages of plumage, some still retaining the full breeding dress, but the numbers did not approach winter status. By 17/10/25 and 18/10/26 the Dunlins were present in winter numbers, but at no time were unusually large flocks seen such as I have recorded from the Stour. Common Sandpiper (Tringa hypoleucos L.). August 1-3, 1925, present in some numbers. One, near the Strood, 20/9/25. Green Sandpiper (Tringa ochropus L.). St Osyth Marsh, single birds seen each day, r-3/8/25 ; one, 21/11/25 ; single birds seen on two occasions, 18/9/26. Reeveshall Marsh, one,