20 YEARS AGO July–August 2002 Northern Harriers again produced young at the North Pool freshwater marsh on Plum Island this summer—the only breeding pair in Essex County. American Avocets were seen at four locations. South Beach, Chatham, was the place to be this period with two different adult Red-necked Stints present on August 1–2 and a Curlew Sandpiper staying for the latter half of August. An adult Gull-billed Tern was also present at South Beach from July 16 to August 2, and an immature bird was found on Nantucket on August 8. Out-of-place warblers included a Cerulean Warbler in Brewster, a Prothonotary Warbler in Pepperell, and a Hooded Warbler in South Boston. Best sighting: a first summer Elegant Tern was present at South Beach, Chatham, from August 4–28, during which time it was seen by dozens of birders. The identification was problematic and not resolved until August 17. It was the first record for the state and only the third record for the East Coast. 40 YEARS AGO July–August 1982 A White Ibis was discovered on Nantucket on August 19. Ruffs were reported from Monomoy, Wellfleet Bay, and Bridgewater in July. Up to 30 Upland Sandpipers were present on Martha’s Vineyard in August. Hudsonian Godwit numbers peaked at 150 on Monomoy and at 50 at Newburyport-Plum Island. Four Little Gulls were seen in Newburyport in July with an immature bird also reported in Scituate. One Sandwich Tern was on Nantucket and two were seen at Nauset in July. Up to one hundred “ portlandica ” Arctic Terns were counted on Monomoy. A male Kentucky Warbler , first reported in Carlisle in May, was still singing in July, although no female was ever detected. A high count of 75 Cape May Warblers was logged at Plum Island on August 22. Single adult male Yellow-headed Blackbirds appeared at Newburyport and Brewster in August. Most disappointing number: Red Knot numbers were low in August with maxima of “just” 1,500 at Monomoy and 900 at Scituate compared to 2,800 the previous year.