84 Scott on W inter Birds at Princeton, N. J. 
trees in the field, and in the daytime the birds rest on the ground. 
They hunt for food morning and evening, and sometimes on dark 
days. Throughout this and adjoining townships these Owls have 
been more or less common, and many have been brought in hy 
gunners. In previous years I have looked on this species as rather 
rare, and some seasons have passed without my meeting with them. 
Since writing the above, two other points, at which vast numbers 
of these birds have congregated, have come to my knowledge, and 
in each case the conditions of locality are identical with those above 
described. 
As the Marsh Harriers began to disappear, their places were speed- 
ily filled by Red-tailed Hawks ( Buteo borealis [*]), which of course 
are resident here every winter. These birds appeared here Novem- 
ber 2, and were in a few days more abundant than the Marsh Har- 
riers had been. Though they were to be seen everywhere, they 
particularly affected the meadows along water-courses, where there 
were large trees. It was not uncommon to see two or three in the 
same tree, and once I counted five, and at another time six in a 
single tree. Many times during the past month or so I was able, 
standing at one place, to see twenty, and even more, on the various 
trees, fences, and other suitable places for alighting. The majority 
were in the gray plumage, but about a quarter of the whole number 
noted were adult. They were here in greatest numbers about No- 
vember 20, and there are still very many at every suitable point. 
To give further idea of their numbers, I may state that I have 
taken more than seventy-five individuals without any particular 
exertion. 
The Red-shouldered Hawks ( Buteo lineatus ), generally our com- 
monest species, were rare, not more than one or two being seen, 
until January 25, when they became quite abundant. I have taken 
ten specimens, three of w T hich are in adult plumage. Cooper’s 
Hawks ( Amipiter cooperi ) have been and still are plenty, while 
Sharp-shinned Hawks, usually very abundant, have been rare. Sev- 
eral Rough-legged Hawks have been noted, and on November 15 I 
saw five individuals in a small field, two in the same tree. Of these, 
[-*- Note. — Examination of Barton’s “Fragments Nat. Hist. Penna,” 1799, 
p. 11, will show that this species is there recognizably described , and named 
Falco aquilinus. Barton was a strict binomenclator ; and, as this name ante- 
dates Yieillot’s F. borealis , it becomes necessary to know the species as Buteo 
aquilinus (see Birds Col. Yall. I, 1878, 593). — E. C.] 
