Accepted:

13 Jul 1988            Rockland, Knox Co.                                1988-001 J. Wells

22 May, 15 Jul–25 Aug 1996  Waldoboro, Lincoln Co.                       1996-005 T. Mohlie; et al. MBN 9(2):46

8 Jun– ~1 Aug 1996     Northeast Creek Marsh, Bar Harbor, Hancock Co.    1996-006 C. Witt, A. Bacon MBN 9(2):46

29 Sep 2003            Monhegan Island, Lincoln Co.                      2003-005 J. Trimble

18 May 2005            Monhegan Island, Lincoln Co.                      2005-012 S. Walker, G. Dennis NAB 59(3):407

17 Sep 2007            Old Town House Park, N. Yarmouth, Cumberland Co.  2007-011 D. Lovitch

18 Jun 2010            Vile's Arboretum, Augusta, Kennebec Co.           2010-020 J. Adams, M. Viens

9 Nov 2014             Pleasant Point, north of Eastport, Washington Co. 2014-017 C. Bartlett

12-13 Oct 2015         Monhegan Island, Lincoln Co.                      2015-016 L. Seitz

22 Jun - 10 July 2020  Searsport, Waldo Co.                              2020-022 C. Todd (one bird accepted of possible two)

17 Oct 2022       Addison (Big Nash Island), Washington Co. 2022-036 E. Obercian and E. Strusinski

19-20 Jul 2023       Canaan, Somerset Co. 2023-054 W. Sumner, L. Bevier, T. Persons

29 Sep - 6 Oct 2023    Monhegan Island, Lincoln Co. 2023-046 P. Baker, D. Gardoqui

Unaccepted:

None

Not yet reviewed (pending historical records and unsubmitted reports):

27-31 Jul; Aug*** 1989 Winslow, Kennebec Co.                             1989-xxx J. Wells, P. Vickery AB 43(5):1290

29 Sep 1992            Monhegan Island, Lincoln Co.                      1992-xxx P. Vickery

27 Sep 1993            Monhegan Island, Lincoln Co.                      1993-xxx P. Vickery

15 Jun 1994-[2000]**   Bangor at Penjajawoc Marsh, Penobscot Co.         1994-xxx J. Markowsky, B. Barker MBN 7(2):43

11 Jun 1994            Wilton near Wilson Lake,                          1994-xxx W. Howes MBN 7(2):43

11 Jun 1994*           Cutler, Washington Co.                            1994-xxx fide W. Townsend FN 48(5):926

12 Jun 2004            Fort Fairfield, Aroostook Co.                     2004-xxx B. Sheehan FN 58(4):497

8 Jul 2004             Fryeburg, Oxford Co.                              2004-xxx D. Mairs  FN 58(4):497

5 Jan 2010             Monhegan Island, Lincoln Co.                      2010-xxx P. Vickery and C. Duncan

Notes:

This species formerly bred, with the largest colonies—from "five pairs to over a hundred" (Palmer 1949)—in southern Penobscot and eastern Washington Counties. Records of migrants and summering birds up through the 1980s, except those above, not listed; many scattered reports perhaps not listed here either.

* This may refer to the Wilton bird; needs checking

** bird(s) at Penjajawoc occurred off and on up through 2000

*** The published date cited in American Birds is 27-31 July 1989, but the observers reported fledglings at the end of August (in eBird). The full dates and presence of the birds that nested at Winslow needs clarification.