. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 65 Table 15. Numbers and frequency of occurrence of Great Crested Terns seen by Schipper at Roi-Namur, October 1979-November 1988. JAN FEB MAI* APR MAY JUN JUL AUG SEP OCT NOV DEC 1) 7 2 2) 2 16 19 35 15 12 41 12 3) 7 7 31 25 36 33 41 26 31 4) .20 .22 .45 .52 .55 .54 .57 .51 .55 46 .64 20 .31 .23 (1) Mean number seen per days in which observed. (2) Peak number recorded during month (3) Number of days observed (4) Percentage of days of observation in which seen. G
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 65 Table 15. Numbers and frequency of occurrence of Great Crested Terns seen by Schipper at Roi-Namur, October 1979-November 1988. JAN FEB MAI* APR MAY JUN JUL AUG SEP OCT NOV DEC 1) 7 2 2) 2 16 19 35 15 12 41 12 3) 7 7 31 25 36 33 41 26 31 4) .20 .22 .45 .52 .55 .54 .57 .51 .55 46 .64 20 .31 .23 (1) Mean number seen per days in which observed. (2) Peak number recorded during month (3) Number of days observed (4) Percentage of days of observation in which seen. Gagan - On 15 March 16 Crested Terns were seen roosting together on rocks exposed by low tide off the northern point (Figure 39). Nine were seen there on 25 March. On 15 March eleven of the birds were in breeding plumage, three were in transitional or non-breeding plumage, and two were in juvenal plumage. On 23 March. Figure 39. Roosting Great Crested Terns and Black Noddies at the northern end of Gagan Island, 15 March Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C. : [Smithsonian Press]
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