THE WREN. 51 
For those of my readers who are not familiar with the Jaegers, I 
would say that they resemble the Gulls in form and size. ‘The 
Pomarine Jaeger is larger than the Parasitic but the plumages of 
the two are practically identical. Both species have two color 
phases irrespéctive of age orsex. In one phase, the birds are wholly 
black; in the other, they are dark above and lighter beneath with 
marked white patches near the tips of the wings which show plainly 
in flight. We saw birds in both plumages that morning. Occasion- 
ally one of the Jaegers, as is their habit, would chase a tern to make 
it drop the fish it carried and a lively chase it would be, although 
the Jaeger usually won in the end. 
During the morning, we saw a small flock of Black Ducks flying 
and one Scaup which had evidently been wounded, for it tried to 
rise but could only flop its wings. ‘Twice during the day, we flushed 
a Willet but could only get near enough to see its form and hear its 
characteristic call, described as Will-will-willet. As we ate our 
lunch on the Point, three White-winged Scoters flew by; and shortly 
after two Roseate Terns, so close we could easily see the black bills 
and long forked tails. 
During the walk back to the boat, the birds were different but not 
unusual for the most part. A Black Tern was perhaps the most 
interesting thing. Its small size, slate-gray wings, white head and 
black patches back of the eye made identification easy. We also 
saw Yellow-legs, Spotted Sandpiper, and Black-bellied Plover. 
Just at twilight, several Night Herons flew over the boat and bade 
us a characteristic ‘ good-night.” 
The next day, we took in the Chatham end of the island. Most 
of the birds were like those of the day before. Yellow-legs, and 
Semipalmated Plover were more common, not to mention the abun- 
dance of “Peep,” gunners, and mosquitoes, whose presence added 
nothing to our pleasure. It was evident that the northeast end of 
Monomoy Island was more accessible and therefore less desirable 
than the ocean point where we had been so fortunate the day be- 
fore. As a whole, however, the island seemed to me an unusually 
favorable place for all kinds of shore and water birds at the right 
seasons. 
Joseph Kittredge, Jr. 
