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. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 126 130 â 120 â 110 - 100 - 90 - 80 - 70 â I/O DC UJ CD ZD SC 60 . 50 â 40 ⢠30 ' 20 â 10 - 0 ⢠\ .* â¢. â¢^-â **⢠â M A M A 0 N D Figure 39, Monthly mean shorebird populations for Johnston Atoll, 1963-1969; Golden Plover (solid line), Ruddy Turnstone (dots), Wandering Tattler Cdashes). Of the 15 accidental waterfowl, marsh, and land birds, the Japanese White-eye is known from five months, the Black-bellied Plover from four months, the Semipalmated Plover and gull species from three months each, the Peregri
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 126 130 â 120 â 110 - 100 - 90 - 80 - 70 â I/O DC UJ CD ZD SC 60 . 50 â 40 ⢠30 ' 20 â 10 - 0 ⢠\ .* â¢. â¢^-â **⢠â M A M A 0 N D Figure 39, Monthly mean shorebird populations for Johnston Atoll, 1963-1969; Golden Plover (solid line), Ruddy Turnstone (dots), Wandering Tattler Cdashes). Of the 15 accidental waterfowl, marsh, and land birds, the Japanese White-eye is known from five months, the Black-bellied Plover from four months, the Semipalmated Plover and gull species from three months each, the Peregrine Falcon, Spotted Sandpiper, Dowitcher species and Sharp-tailed Sandpiper from two months each; the remain- ing eight species are known from one month each. Introduced Birds: The three introduced bird species are known from all months. Furthermore, both breeding species probably breed year-round. At-Sea Birds: In August 1963, a 50,000 square mile, rectangular, pelagic grid was established by the POBSP, centered approximately 175 miles southwest of Johnston Atoll. In all, 42 monthly survey cruises were conducted in this grid through February 1967. Birds, primarily seabirds, were observed along 22,898 miles of daytime travel and along. 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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