Colymbus holbølli. 1897 Lake Umbagog. may 21 (3) in full moulting plumage, . 21 Two in full moulting plumage & apparently molting birds near the middle of the Sweet Cove a little about the northwest end of Great Island. At a distance they looked like Grebeanders floating equally high on the water and carrying their necks stiffly crest but as I got nearer they flattened or perhaps practically submerged their bodies swimming very fast down wind & directly away from me. When I came within 100 yards they took to diving. Up to this time they had kept close together in fact touching one another - but they now became separated. One after three or four dives turned sharply about, stretched up its long, slender neck and took wing rising (against the wind) with apparent ease, passing me within 60 a 70 yds flying swiftly & very like a Loon, its neck extended in front, its legs & feet stretched out straight behind, after giving two yards or more directly to windward it adjusted & presently began calling most curiously loud, harsh voice not unlike that of an excited & angry Crow; car-r-r-r, car-r-r-r, car-r-r-r (three or four repetitions given rather slowly & deliberately). Meanwhile I had drawn its mate close. whether I was pressing too hard but every time the heard the other call she answered in similar tones but usually in a more croaked or gasping voice & then the settled besides the car-r-r-r a low explosive huff any like that of a Gullwind. Both birds when diving remained under water an unusually long time (much longer than can most water fowl) but they seldom covered a distance of more than 50 or 60 yds. & they did not once double on each try to pass one under water. When they came to the surface to dive before they sometimes showed only