Cambridge, Mass.
1905
July 13
  I have been at home most of the time since July 5th
and have watched the Robins roost in the lilacs nearly every evening
when the birds were coming in. Up to the 11th I saw no more
than twenty-five or thirty but on that evening there were at
least one hundred and on last evening and this fully two
hundred. Their incoming occurs later and extends over a
shorter period than has been the case at this roost during
previous years. In fact few birds appear now until sometime
after sunset and most of them come in practically together
just before dark. A large proportion are young in speckled 
plumage. The old males still sing freely. The roost was
not kept under close observation through the spring. Mr. Deane
tells me that he noted the birds resorting to it first on
May 27 when, at 7 P.M., about twenty five were seen darting
about the lilacs and others heard in the foliage.
Robin roost
  Mr. Deane has repeatedly seen Robins eating suet in the
catalpa tree this season. A large lump of suet, suspended
there in February or March, has lasted until very recently
and has been frequently visited by Robins, Catbirds and
Orioles. The Robins were seen eating it on April 17, May 29, 
and June 7. 
  Shortly before sunset this evening a number of Chimney Swifts 
appeared at a considerable height over the garden. There were
six at first, soon afterwards eight, and finally ten. They
remained in sight for upwards of twenty minutes &
then drifted off in different directions. I was surprised
at seeing so many together here at this date which is 
too early, I think, for migration. Heretofore no more
than two have been noted at any one time this year.
I cannot ascertain where Swifts continued to nest in
Cambridge.