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 […]
The evolutionary history of Eurasian redstarts, Phoenicurus
Black Redstart (Phoenicurus ochruros) Science Article 1 abstract The bird genus Phoenicurus comprises 10 to 11 species that occur from Europe through Asia. To resolve theirphylogenetic relationships, their phylogeography and the tempo of their evolution, the mitochondrial cytochrome-b gene wassequenced for 16 taxa. The Bayesian maximum likelihood tree and neighbor-joining dendrogram computed from the resultingdata […]
The effect of supplemental food on time budget and body condition in the Black Redstart Phoenicurus ochruros.
Black Redstart (Phoenicurus ochruros) Science Article 3 abstract We studied the effect of supplementary food on time allocation, breeding success and parental body condition in Black Redstarts Phoenicurus ochruros in the Alps, NW. Italy. Time budgets of both males and females were significantly affected: individuals provided with supplementary food spent less time foraging and more […]
Young Cuckoo (Cuculus canorus) in the nest of the Black Redstart (Phoenicurus ochruros)
Black Redstart (Phoenicurus ochruros) Science Article 2 abstract I found a young cuckoo (Cuculus canorus) in the nest of the black redstart (Phoenicurus ochruros) in the viticultural area of Andra{evec (46 deg 00’N, 15 deg 57’E), in north-western Croatia, on June 15, 2004. The nest was situated on an outer wooden beam of a building […]
Heterospecific rival recognition in Black Redstart (Phoenicurus ochruros)
Black Redstart (Phoenicurus ochruros) Science Article 4 abstract It has long been hypothesized that birds learn to recognize heterospecific competitors and for that reason males behave more aggressivelyagainst intruders in areas of local sym- patry.Recently,ithasbeenconfirmedthatindividualsofonespeciesareabletolearnspe- cies-specific visual and acoustic characteristics of heterospecific rivals and that theyare able to remember these associations. Here, we test hypotheses […]
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 […]
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 […]
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 […]
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. […]
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. […]