252 CALIFORNIA ACADEMY OF SCIENCES  [Proc. 41 Ser. 
a male building a nest of moss about 20 feet above the 
ground in the crotch of a Scalesia tree in the humid region. 
On Chatham in latter January, I saw one carrying cotton for a 
nest. At this time it rained a great deal, the wagon road being 
like a river on the slopes of the hills, and ponds being abundant. 
In early February, at Basso Point, on the same island, I saw 
one carrying straw crosswise in its beak. About a quarter of a 
mile inland from Black Beach Roads, Charles, at an elevation 
of 150 feet, two pair were found nesting, both in Bursera trees. 
One nest, which was just being built, was composed chiefly of 
lichen; the other was of dried grass and contained one fresh 
egg. The males in these two cases were not black-headed. 
On south Albemarle on March 12, a bird was seen gathering 
cotton in its beak. 
The nests were usually well-made and composed of grass 
blades and grass stems, orchilla moss or lichen, and cotton balls. 
Cotton balls and soft dry grass were usually used as a lining. 
The nests were found in trees and bushes (Bursera, Scalesia, 
lemon, thorn bushes) all the way from five feet to 20 feet 
from the ground, the majority being found at about 12 
feet, sometimes in a crotch and at other times out towards the 
end of a limb. 
Eggs were found as follows: 
January 27; Wreck Bay, Chatham; three fresh. 
January 29; Wreck Bay, Chatham; three fresh. 
February 8; Basso Point, Chatham; one fresh. 
February 8; Basso Point, Chatham; one fresh. 
February 13; Isthmus of Chatham; three incubated five days. 
March 1; Black Beach Roads, Charles; one fresh. 
March 2; Black Beach Roads, Charles; two fresh. 
March 2; Black Beach Roads, Charles; three, incubated six days. 
March 2; Black Beach Roads, Charles, four fresh. 
Three partly fledged young were taken from a nest at an 
altitude of about 750 feet in the Wreck Bay region, Chatham, 
on February 23. The nest was about 15 feet from the 
ground in the top of a small Scalesia tree; it was domed, 
about five inches in diameter, and made of grass. The 
parents flew excitedly back and forth in front of me, while I 
was examining the nest. On the 28th of February, another nest 
containing three slightly-fledged young was found about 20 
feet above the ground in the top of a Scalesia tree. 
