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 […]
Category: Charadriiformes
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 […]
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 […]
Alaska Seabird Information Series BLACK GUILLEMOT Cepphus grylle.
Black Guillemot (Cepphus grylle) Science Article 1 abstract The Black Guillemot (Cepphus grylle) is a striking bird with almost entirely black breeding plumage, a bright, white patch on the upper wing and spotless, white underwings. Its plumage is set off with bright red legs and feet, a slender black bill, and a coral red mouth-lining. […]
The occurrence and behavior of non-breeding Horned Puffins at Black Guillemotcolonies in northern Alaska.
Black Guillemot (Cepphus grylle) Science Article 6 abstract The Black Guillemot (Cepphus grille) and Horned Puffin (Fratercula comicdata) are cavity nesting alcids that typically breed in talus. In Alaska both species breed in rock cavities as far north as Cape Lisburne (D. Roseneau, pers. comm.). No talus or rock cliffs are present north of Cape […]
Mercury in liver, eggs and feather of blackguillemot Cepphus grylle faeroeensis in theFaroe Islands
Black Guillemot (Cepphus grylle) Science Article 4 abstract During 1995-1997 a large number of black guillemots from an area near the southern part of Streymoy and Hestoy were sacrificed in connection with a large study of the birds’ diet and of pollutants load in the Faroe Islands. In recent years also black guillemot eggs havebeen […]
Reported decrease of PCB in black guillemot eggsduring the period 1999 to 2001
Black Guillemot (Cepphus grylle) Science Article 3 abstract A research done by the Food and Environmental Agency had shown a significant reduction of PCBin Black guillemot eggs during the period of 1999 to 2001. This brought up the question weatherthere is a reduction of PCB in the environment, or Black guillemot has changed diet. Twoapproaches […]
Colony attendance in a Black Guillemot colony inWest Greenland
Black Guillemot (Cepphus grylle) Science Article 5 abstract Colony attendance of Black Guillemots Cepphus grylle was studied at a colony on Skarveo in WestGreenland. Observations were conducted in the post hatching period by scan sampling birds in and near the colonyevery 30 minutes throughout five days. The rhythm of colony attendance varied diurnally, peaking in […]
Breeding Distribution and Numbers of Black Guillemots in Jones Sound, N.W.T.
Black Guillemot (Cepphus grylle) Science Article 2 abstract aerial surveys of Jones Sound, N.W.T., reveal a highly clumped distributoiof nb lack guillemotsi n the early spring and throughout thebreeding season. Black guillemots are uncommon throughout much of Jones Sound except at its mouth and in the western portion. By September,most guillemots have left the area. […]
The diet of Bar-tailed Godwits Limosa lapponica in the Wadden Sea: Combining visual observations and faeces analyses
Bar-tailed Godwit (Limosa lapponica) Science Article 1 abstract Estimating diet composition of Bar-tailed Godwits Limosa lapponica by visual observations was hampered by large amounts of unidentified prey items. Therefore, additional analyses of faeces were conducted. Overall, 17 prey species were found in the droppings, but only four polychaetes, the Lugworm Arenicola marina, the Estuary Ragworm […]