may be seen near Belleek demesne and Moyfort, about a mile below the town of Ballina.
Redbreasted Merganser, Mergus serrator.—Resident and common, breeding on Lough Conn and other suitable lakes. They sometimes assemble in large flocks on the river near Roserk, and on May 2nd I saw a flock of twenty-four birds close to the shore here, all of which appear to have paired.
Eared Grebe, Podiceps auritus.—Very rare. In February, 1852, I saw a pair of Grebes in the Moyne channel, and one which I shot proved to be an Eared Grebe in immature plumage.
Little Grebe, Podiceps minor.—Resident and breeds on the little loughs throughout the district. During the winter a little party of five or six birds generally come down to the river and haunt the shores of the islands near Bartragh until March.
Great Northern Diver, Colymbus glacialis.—A regular winter visitant. Its favourite haunts are in the bay and estuary, where during winter and spring a few may be always seen. They generally take their departure for their summer quarters about the latter end of April or beginning of May, although sometimes they remain later. Before leaving many assume the summer plumage. On the 24th May, 1851, I had the pleasure of seeing a sight not often witnessed, viz. a flock of ten Northern Divers, nine of which exhibited the beautiful plumage of summer. I met with them in the open bay between Bartragh and Killcummin Head, and they had evidently congregated in preparation for their final departure.
Red-throated Diver, Colymbus septentrionalis.—More numerous than the last mentioned. Many assume the breeding plumage before leaving in April and May.
Black-throated Diver, Colymbus arcticus.—Very rare. One exhibiting the fine black throat, and apparently in full summer plumage, was seen by my brother, Mr. E.H. Warren, near Bartragh, in April, 1851.
Common Guillemot, Uria troile.—Very common, and breeds in large numbers on the cliffs of Downpatrick Head.
Ringed Guillemot, Uria lachrymans.—Has been obtained on two occasions. On October 23rd, 1862, I shot one in the channel near here, and on the 23rd April, 1875, I killed a second one in the Moyne channel.
Black Guillemot, Uria grylle.—Resident. Breeding in very limited numbers between Kilcummin and Downpatrick Heads.
