. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 102. Figure 31. Brown Noddy at nest with egg, March 1967. BSFW photograph by Eugene Kridler. Annual Cycle This species shows a less clearly defined breeding cycle than that of any other species breeding in the northwestern Hawaiian Islands. On Nihoa eggs have been laid in all months from December through August and some may have been laid in the other months as well. The more quan- titative data suggest that the numbers of laying birds increase con- siderably during March and several succeeding months, with li
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 102. Figure 31. Brown Noddy at nest with egg, March 1967. BSFW photograph by Eugene Kridler. Annual Cycle This species shows a less clearly defined breeding cycle than that of any other species breeding in the northwestern Hawaiian Islands. On Nihoa eggs have been laid in all months from December through August and some may have been laid in the other months as well. The more quan- titative data suggest that the numbers of laying birds increase con- siderably during March and several succeeding months, with little laying occurring after mid-August. Observations indicate periods of peak laying as: 1923-June, 1964-July, 1966-June or July, and 1967-late July or early August. Greatest numbers probably hatch from late June through mid- or late August, and largest numbers probably fledge from late August through October. Judging from data gathered on other northwestern Hawaiian Islands, probably relatively little breeding occurs from November through 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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