Vox. II, Pt. 11] GIFFORD—BIRDS OF THE GALAPAGOS ISLANDS 215 
Young and immature birds were noted as follows: 
March 5; Villamil, Albemarle; I took three young, which were flying 
about. 
March 7, 8; southeast Albemarle; in the moist region I saw four or five 
birds of the year. 
March 13; ten miles west of Villamil, Albemarle; I took one bird of 
the year. 
March 15; Cape Rose, Albemarle; two or three young birds. 
March 26, 27; Tagus Cove, Albemarle; about two-thirds of the birds 
observed were young. 
March 30, 31; Tagus Cove, Albemarle; many young. 
April 2; Tagus Cove, Albemarle; young about as common as adults; 
two or three young above fifteen hundred feet elevation. 
April 12; Banks Bay, Albemarle; mostly young. 
April 13, 14; Banks Bay, Albemarle; young and old in equal numbers. 
April 25; ten miles west of Villamil, Albemarle; young birds noted. 
July 9; Barrington; one young one in spotted plumage. 
September 19; south Abingdon; one young one with spotted breast. 
Black-eared Mockingbirds usually occurred singly or in 
pairs and did not associate with other birds to any extent. 
An exception was noted when we landed on Wenman, where 
a pair of these mockers along with a dozen Northern Cactus 
Finches were peering over a ledge at us within a couple of 
feet of our heads. 
We did not meet with these birds at sea, as we did certain 
other Galapagos land birds. The finding of one on Duncan 
and of one on Daphne was the only proof we had that they 
moved about somewhat from island to island. 
As these birds ate most anything, they had little or no 
sharp competition with other species. On south Indefatigable 
I saw one drive a Parrot Tree Finch from some heliotrope 
blossoms on which it was feeding; this was done by making 
a swoop at the finch. A little later I saw another similar oc- 
currence, the victim being a Sturdy Ground Finch. 
Four, which we kept in captivity with a number of Gala- 
pagos Doves, proved quite warlike, killing two doves, appar- 
ently by striking them on the head with both bill and wings. 
One mocker in particular seemed to take a mischievous enjoy- 
ment in chasing doves. 
All were tame and inquisitive; least so, however, in the 
breeding season. Their tameness and inquisitiveness varied 
on the different islands, being at the maximum on Bindloe. 
