Hackman, C. Douglas, 1964-1965, 1967
Page 46
Image from the Biodiversity Heritage Library. Contributed by [Holding Institution Unknown]. | www.biodiversitylibrary.org
Transcription
C.D. Hackman 1967 Species Account Blue-faced Booby (Sula dactylatra) March 8 N.koa Island 2 on rock ledge halfway to top - south side. seen to be only 2 on isled at present. March 10 Necker Island Breeding birds were scattered along the ridge in the bare areas. Nests usually occurred in little clusters - sometime 5-6 feet apart. Counted 108 nests: 43 w/ 2 eggs (also dont w/ eggson low caps) 23 w/ 1 egg (2 of these pipped) 1 w/ 1 egg + 1 naked chick 2 w/ small naked chicks 37 nests - unknown contents. All birds were reluctant to leave their nests. Possibly because they are seldom disturbed or possibly because many were on eggs that were about to hatch. Found one bird with a light blue egg - about the color of the lines on standard noteboks labeled pages. Measured a number of eggs; 8 sets of 2 ad 2 nests w/ one egg. Didn't have time to measure anymore because a compass gummed up my calipers. March 11 East Island, French Frigate Shoals About 15 birds roosting on the isled after dark. Captured 2 with bands + the rest spooked. Two of the birds observed were subadults. No nests. March 13 Trug Island, French Frigate Shoals Twenty-four nests: 6 w/egg, 17 w/ 2 eggs, + one with 1 egg ad 1 naked chick. Most about half were banded but only managed to capture three in the daylight. There were 41 adults on the isled. Hackman, C.D. 1967 Species Account Blue-faced Booby (Sula dactylatra) March 14 Whale - Skate, French Frigate Shoals 53 birds present on isled. Birds resting on the beach and on the beach crest. A few birds also resty in the interior of the isled or bare spots between or around clumps of Messerschmitts. 47 nests as follows: Adult Male on nest: 2 eggs - 14 1 egg - 3 Adult female on nest: 2 eggs - 9 1 egg - 6 Unknown sex on egg: : 2 eggs - 6 1 egg : 5 No chicks were found. March 14 Trug Island, French Frigate Shoals One of the two egg clutches observed yesterday hatched out this morning. Both naked chicks were still in the nest attended closely by a male. Both chicks were about the same size. March 15 Garden Cinnacles from 800 yds at sea. 7 birds flew out to look the ship over + followed us for about 45 minutes. March 17 Offshore Leysan Island Evening count of 9 birds returning to isled from the nest. March 18 Leysan Island A thorough check of the NW quarters of the isled only turned up 70 birds - five of which were banded and 2 of which had been banded previously.