576 Wisconsin Academy of Sciences, Arts, and Letters. 
there was some grass growing about it, affording, however, very 
little concealment. In size, it measured the same as the other 
nest, with the exception of its being three-fourths of an inch 
deep. When first observed, the nest was on the southwest shore 
of the island. The following week, a storm drove the waves 
against the side of the island and, when the place was visited 
again, on June 3, the nest had been moved to the north east 
side of the island, where it was found fastened among the 
grasses. This was rather surprising, and no plausible explana¬ 
tion was offered other than that the birds had moved it to obtain 
shelter from the storm*. 
One Loon was winged with a shotgun and could not take to 
flight with its mate; but it dove, apparently with as great ease 
as ever, and kept out of gunshot. 
The eggs of the Loon are very dark in appearance, the ground 
color being olivaceous brown, spotted with very dark brown or 
almost black. The spots are* small, mainly under one-eighth 
inch diameter, and scattered evenly over the whole shell. The 
three eggs measured: 3.29x2.01; 3.53x2.12; 3.46x2.16. 
69. Forster's Tern. 
Sterna forsteri (Nutt.). 
This bird was found to be very abundant, especially in the 
neighborhood of the larger lakes of the region. It is an easy 
and graceful flyer and very expert in catching its food, which it 
does by dropping rapidly to the water’s surface to rise again with 
the morsel in its bill. These Terns always congregate in colonies 
when the time for nesting arrives. They are, in general, late 
nesters; for, several sets of eggs taken July 6 were fresh and 
some nests were found containing incubated eggs as late as July 
29. However, young birds were observed on the wing on the 
last date, July 29, and a few nests containing eggs were seen as 
early as Hay 26. Thus there seems to be a probability that two 
broods are raised in a season. The Forster’s Tern was partic¬ 
ularly numerous at Water-hen Lake where* two separate colonies 
were observed. The nests were built on masses of dead, floating 
reeds, among the thick rushes growing in the water. They were 
made of reed stems, rushes, and other debris, with a saucer- 
shaped depression in the top, sometimes lined with finer ma¬ 
terial such as grass. A good example of the nest of this bird is 
