yi re General Notes. 485 
tember 19, that whilst passing close to an old silver birch tree on the borders 
of a large wood, a Myrtle Warbler ( Dendroica coronata) flew off one of 
the overhanging branches, which at the time naturally caused me no 
surprise, nor was I particularly interested, when returning some two 
hours later the same thing occurred again. However in the afternoon 
when covering the same ground the warbler again left the branch, as well 
as a Yellow-breasted Sapsucker (Sphyrapicus varius varius) the trunk, I 
must admit my curiosity was aroused, and I decided to secrete myself 
and await results. It was not long before both birds returned to the tree, 
the sapsucker to some holes in the trunk, and the warbler to some on the 
upper side of the branch which I had not noticed. Here he regaled him- 
self on the sap after the manner of his companion, and continued doing so 
for some considerable time, until I came out of hiding when both birds 
flew away. For the next two days I visited the spot on several occasion 
and every time the warbler was there, and usually the sapsucker as well 
but I never saw the former attempt to take the sap from the holes in the 
trunk, but only from those on the branch, where it was able to perch readily 
and drink at leisure, and no doubt eat any small flies or insects that may 
have got caught in the sap as well. The next case to come under my 
notice was that of an adult female Black-throated Blue Warbler (Dendroica 
cerulescens cerulescens) which on October 1 (the latest date as it so happens 
on which I have noticed it here) flew into the branches of a beach tree and 
commenced imbibing the sap from some old sapsucker holes. Whilst 
watching it I noticed another cluster of holes in the trunk, and it was not 
long before the bird on hovering wings after the manner of a hummingbird 
was abstracting the sap, and no doubt any insects from these also, thus 
differing in this respect from the Myrtle, which as already stated never once 
attempted the feat, although no doubt it was quite as competent to perform 
it as the other. It looks as though this habit may only be resorted to in 
the fall, when insects are scarce and late departing birds have some diffi- 
culty in making all ends meet.— H. Moustey, Hatley, Que. 
A Roosting Place of Fledgling House Wrens.— A pair of House 
Wrens which had bred in a box in Mr. George Nelson’s garden in Lexington, 
Mass., brought out their second brood of young in the morning of Aug. 19. 
1917. The family remained in the vicinity of the box during the day. 
At twilight Mr. Nelson watched one of the parents assemble the young 
birds in a pitch pine tree near the box, and escort them to a little nest or 
platform well concealed among the pine needles where they settled for the 
night, huddled together in a compact mass. The Wrens’ roosting place 
is five feet from the ground and twelve feet from the box they were reared 
in. It isa frail, circular, shallow cup, made of fine roots and was originally 
no doubt, the foundation of a Chipping Sparrow’s nest. On the following 
night the young birds, after making a tour over the space of half an acre, 
during which they visited another nest twenty yards away, returned to 
the same place to roost. On the next evening (Aug. 21) I joined Mr. 
