Chen hyperboreus. March 22, 1909. To-day I received an immature bird in a rather curious plumage; for instead of getting white feathers in the back ahead of those in the neck and head as my other two immature ones have done, it was just the reverse. There were but few white feathers in the back and these were tertiarics, while the neck was white almost down to its base; the top of the head and the region in front of the eyes had a slight grayish tinge still. The bill and feet were practically as bright a pink as those of the adults. There was no rusty orange color on the bird. All of the other Snow Geese and White- fronted Geese had a whack at the newcomer, even the latest arrival, which was received four days ago, bit the new bird. This seems customary with all three of the species I now have. March 28, 1909. Two immature Snow Geese not yet described are similar to the Second one written about, having more or less gray on the cheek and more or less white feathers and the gray ones of the back.