Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 5 abstract On 23 March 2002, in my wooded yard near Zebulon, Wake County,NC, I watched two Yellow-bellied Sapsuckers (Sphyrapicus varius), a maleand a female, engage in behavior I had never before witnessed. The malewas perched on the trunk of a small hickory (Carya sp.) having bark riddledwith sapsucker […]
RACIAL AND SEXUAL DIFFERENCES IN MIGRATION IN SPHYRAPICUS VARIUS
Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 2 abstract The subspecies of the Yellow-bellied Sapsucker (Sphyrapicus varius) are strongly characterized not only in morphology but in migratory habits as well. General outlines of the breeding ranges and winter ranges of the four subspeciesa re given in figures 1 and 2.These illustrate the well-known facts that S. […]
Habitat Analysis and Survey of the Yellow-bellied Sapsucker,Sphyrapicus varius, in the Southern Appalachians
Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 4 abstract The purpose of this study is to provide a habitat analysis of the Yellow-bellied Sapsucker,Sphyrapicus varius, in the Southern Appalachians. This population of S. varius is unique because it breeds in the high elevations of the Southern Appalachians, while the northern population breeds from Pennsylvania to Alberta […]
YELLOW-BELLIED SAPSUCKER, SPHYRAPICUS VARIUS, IN ALASKA
Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 3 abstract The Yellow-bellied Sapsucker( Sphyrapicus varius), which breeds in the temperate and boreal forests of interior North America, has not been reported previously from Alaska. However, recent observations show that it is currently a rare summer visitant and breeder in extreme east-central Alaska, and the presence of old […]
Notes on Icterus nigrogularis and I. chrysocephalus in Surinam
Yellow Oriole (Icterus nigrogularis) Science Article 1 abstract In his interesting and important paper,
Tracking of the Yelkouan Shearwater
Yelkouan Shearwater (Puffinus yelkouan) Science Article 2 abstract Over the past six months, the EU LIFE Yelkouan Shearwater Project has been undertaking fieldwork to fitelectronic devices to the Yelkouan Shearwaters to monitor their movements at sea. The tags are the latest intechnology for seabird tracking. This is the first time that such extensive research on […]
How can the Yelkouan shearwater survive feral cat predation?A meta-population structure as a solution?
Yelkouan Shearwater (Puffinus yelkouan) Science Article 3 abstract The Yelkouan shearwater, Puffinus yelkouan, is an endangered Mediterranean endemic species of burrowing petrel threatened by feral cats. The life-history parameters of a small population of Yelkouan shearwaters on the Mediterranean island, Port-Cros, were studied inconjunction with the diet of feral cats, to examine the birds’ vulnerability […]
The endemic Mediterranean yelkouan shearwaterPuffinus yelkouan: distribution, threats and a pleafor more data
Yelkouan Shearwater (Puffinus yelkouan) Science Article 1 abstract The endemic Mediterranean yelkouan shearwater Puffinus yelkouan, elevated to the rank of species in 2002, is poorly monitored and studied. Despite this lack of data and the susceptibility of closely related species to threats at breeding sites and foraging areas, the yelkouan shearwater is currently considered to […]
The census and distribution of winteringwoodpigeons Columba palumbus in theIberian peninsula
Wood-Pigeon (Columba palumbus) Science Article 1 abstract Throughout the 1997-1998, 1998-1999 and 1999-2000 seasons, Woodpigeon population censuseswere carried out in their traditional Iberian wintering area, which comprises the southwesternquadrant of the Peninsula. The method applied was the direct counting of flocks incommunal roosts, of which 210 have been checked so far. Four counts were carried […]
Breeding Woodcock Scolopax rusticolamonitoring in France
Woodcock (Scolopax rusticola) Science Article 1 abstract The French breeding Woodcock population has been monitored since 1988, and since 1991, the monitored geographical area has been representative of that population. Monitoring is based on observing roding males, the methodology being random sampling with replacement. The annual results are expressed as a frequency of occurrence. The […]