Mergus americanus. MERGANSER. Mergus serTator. RED-BREASTED MERGANSER.-These two species occur in the same range and are so often noted together that it seems advisable to discuss them under the same heading. They are both residents, being more or less common throughout the year among the northern islands, at least. They are especially fond of tide water streams, and it is the -usual sight to see a string of one species or the other working through the narrow passes on the change of tide, flying low over the water with great speed. Their flight is direct, and unless greatly alarmed, they do not swerve from their chosen course, as is so characteristic of fresh water ducks. Both species were abundant at the mouth of the Stikine in April, where they worked back and forth along the channels through the extensive delta. It would be difficult, except during the breeding season, to go afield without seeing either, or both species. They were common in Glacier Bay in June; a flock of a dozen male Mergansers was noted on one of the little fiords of Willoughby Island, and both forms were seen in Bartlett Cove. August 9 I saw an old Red-breasted Merganser with her brood of nine three-fourths grown young far up the creek which drains into Bartlett Cove. They were not wild, although they started pattering over the water when they first sighted me; on the following day, in a little stream coming in at the right of Berg Bay, I saw another female with a flock of youngsters about the same size. I was following along a bear trail skirting the creek, well concealed in dense alders, when I heard a sudden commotion in the water below. I worked to an advantageous place and enjoyed watching the old bird feeding her young. They were almost as large as the mother, and as she would dive for trout, all the young would start flapping over the water after her, so when she came up, the whole band was there, each mouth open, and every bird begging with throaty hisses and flapping wings. I saw her throw a trout at least six inches long down one gaping maw, and immediately dive; when she came up, all the babies were awaiting her, and so eager were they, that the old bird climbed on to the bank as though to escape their flapping wings, and to look them over before feeding. Lophodytes cucullatus. HOODED MERGANSER.-I have not observed this species in the field, but wish to record an adult male taken near Eagle River in March, 1919, which was left with the local taxidermist, Breezee,