194 
THE WILSON BULLETIN— December, 1922 
contenting themselves with giving the alarm note once or twice 
as they fly away. 
On June 14, 1910, a rather unusual nest was found. It was 
placed in a small depression and carefully lined with shredded 
corn husks. It was situated near a hill of corn and contained at 
the time of discovery, 3 :00 o’clock p. m., three eggs. On passing 
the nest at 7 :00 p. m. of the same day I was rather surprised 
to see that the fourth egg had been laid in the intervening time. 
Twenty-five days later (July 9) at 8 :00 a. m. one egg had hatched 
and by 1 :30 p. m. all the young were out and the shells gone from 
the nest. 
Movable blind used in studying birds’ nests 
It Avas impossible to approach the nest on foot Avithout alarm- 
ing one or the other of the birds, as one was always on guard 
some distance away. At the appearance of a person walking the 
one on guard Avould fly in a circle about the nest giving the 
alarm, at the first note of Avhich the one on the nest ran rapidly 
until some distance aAvay and then took wing to join its mate in 
circling about the intruder. A man ploAving corn was viewed 
