Tag: Black Skimmer

Overwintering of Black Skimmers in California:: Site Fidelity and Inter-Site Movements

Black Skimmer (Rynchops niger) Science Article 3 abstract During the last two decades, Black Skimmers (Rynchops niger) have become increasingly common along the southern California coast.They are now found year-round in southwestern California (Collinse t al. in press) and in northwestern Baja California (Palacios and Alfaro 1992). Little detailed information has been published, however, about […]

AGE AND SEX DETERMINATION IN BLACK SKIMMER CHICKS

Black Skimmer (Rynchops niger) Science Article 4 abstract Post-natal development was studied in 40 southern California Black Skimmer (Rynchops niger) chicks in order to develop a reliable method of aging and sexing pre-flying young in this sexually dimorphic species. Ages of chicks were determined from hatching dates and were calculated also from wing chord measurements. […]

NESTING BIOLOGY OF BLACK SKIMMERS, LARGE-BILLED TERNS, AND YELLOW-BILLED TERNS IN AMAZONIAN BRAZIL

Black Skimmer (Rynchops niger) Science Article 5 abstract Nests of Black Skimmers (Rynchops niger) (n = 37), Large-billed Terns (Phaetusa simplex) (n = 121), and Yellow-billed Terns (Sterna superciliaris) (n = 16) on an exposed sandbar in the Trombetas River, Brazil, were monitored during incubation and hatching in 1982. The species were interspersed throughout the […]

THE ROLE OF REPRODUCTIVE SUCCESS IN COLONY-SITE SELECTION AND ABANDONMENT IN BLACK SKIMMERS (RYNCHOPS NIGER)

Black Skimmer (Rynchops niger) Science Article 1 abstract I examined colony-site tenacity and reproductive success in 19 colonies of Black Skimmers (Rynchops niger)f or 5 yr in New Jersey . Frequent colony-site shifts occurred, and only two sites were occupied in all 5 yr. Although in one year fledging success was nearly zero due to […]

Diurnal and Nocturnal Visual Function in two Tactile Foraging Waterbirds: The American White Ibis and the Black Skimmer

Black Skimmer (Rynchops niger) Science Article 2 abstract We compared the diurnal and nocturnal visual function in two tactile foragingwaterbird species, the red subspecies of the American White Ibis (Eudocimus ruberruber, formerly the Scarlet Ibis), which is known to feed exclusively during daytime, andthe Black Skimmer (Rynchops niger), which forages primarily during darkness. Live birdswere […]