OOLOGICAL COLLECTION
of
Griffing Bancroft
and
Griffing Bancroft Jr.

Elegant Tern
A.O.U. No. 66
Thalasseus
elegans

Incubation fresh. Eggs 1

Taken on Isla Raza in the Gulf of California Mexico
April 17, 1925.

There were three large colonies on this island aggregating perhaps ten thousand birds. The eggs were laid on the bare sand as close together as the birds could comfortably set. The endless coloring seems to be connected with the danger from the Heerrman Gull which always nests around tern colonies.

Personally collected