220 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H SER. 
On July 15, while lying at anchor in Academy Bay, Inde- 
fatigable, one of these little warblers came aboard, remaining 
all day. It spent its time catching flies and cockroaches, and 
was very tame, even alighting on our heads. On July 17, 
the same bird was still aboard. It had become exceedingly 
tame, and one could occasionally stroke it with a finger. 
One or two others had also come aboard. 
Some of the individuals taken on Chatham had diseased 
feet 
18. Certhidea olivacea: DARWIN’S CERTHIDEA 
Abingdon, Albemarle, Bindloe, Charles, Chatham, Cul- 
pepper, Duncan, Indefatigable, James, Jervis, Narborough, 
Seymour, Tower, and Wenman islands. 
This bird was found more or less commonly on all of 
the above islands, although it was not gregarious as were 
the finches. It was usually encountered singly. It was 
found in every life zone, the arid, the humid, and the grassy 
treeless zone of the high mountains. 
On Charles it was rather uncommon. Examples were 
taken, however, on all three visits, October, February-March, 
and May-June; most commonly during the last two. They 
were found all over the wooded interior and on the southern 
slope of the island, chiefly in lemon and orange groves. 
On Chatham they were quite common in the Wreck Bay 
region in the wooded humid belt and in the region inter- 
mediate between the humid and the arid. Mr. Beck took 
the nest and eggs of this species from near the center of 
the low isthmus northeast of the high mountainous part of 
the island. On February 22, I noted a few along the banks 
of a moderate-sized stream in the forest on the south slope 
of the mountains just below the grassy pasture country. 
A few were seen in the southeast coast region of Inde- 
fatigable opposite Barrington, one being noted in a mangrove 
swamp. Two were seen in a like location on south Inde- 
fatigable, November 6. On south Indefatigable, inland from 
Academy Bay, they were found commonly in the humid 
forested belt up to 1100 feet, as high as we went. On our 
visit to this zone in November, they were found to be the 
commonest land bird from 525 feet to 700 feet elevation. 
