Aquatic Warbler (Acrocephalus paludicola) Science Article 1 abstract As a globally threatened species, the Aquatic Warbler requires a monitoring programme forpopulation trends to be tracked. Such a programme should consider the timing of censuses toachieve precise assessments of the number of the singing males within the limited singing period.We compare results of whole-population counts conducted […]
Breeding ecology of Aquatic Warblers Acrocephalus paludicola in theirkey habitats in SW Belarus
Aquatic Warbler (Acrocephalus paludicola) Science Article 11 abstract The breeding ecology of the Aquatic Warbler was studied on the three largest mires in Belarus in 1998
Factors affecting fluctuations of the Aquatic Warbler Acrocephaluspaludicola population of Byelarussian mires
Aquatic Warbler (Acrocephalus paludicola) Science Article 6 abstract Data on the density of Aquatic Warbler and plant associations in the marshes of the Sporovskiy reserve(Byelarus’) were collected between 1996 and 2003. The species density changed between years from 135 to even 0males per km
THE DIET OF THE APLOMADO FALCON (FALCO FEMORALIS)IN EASTERN MEXICO
Aplomado Falcon (Falco femoralis) Science Article 4 abstract describe here breeding season diets of Aplomado Falcons (F&co femoralis) at 18 sites in Veracruz, Campeche, and Chiapas, Mexico, based on 256 animals in prey remains and 234 prey that I detected while watching the falcons’ feeding behavior. Birds comprised 94% of individuals in prey remains, but […]
Wild-reared aplomado falcons survive and recruit athigher rates than hacked falcons in a common environment
Aplomado Falcon (Falco femoralis) Science Article 3 abstract The northern aplomado falcon (Falco femoralis septentrionalis) has been the subject of a large-scale reintroduction effort conducted by The Peregrine Fund since 1993. Intensive monitoring during 2002-2004 revealed approximately 38 breeding pairs and numerous non-territorial individuals in two study areas centered on Matagorda Island National Wildlife Refuge […]
APLOMADO FALCON STEALS PREY FROM LITTLE BLUE HERON
Aplomado Falcon (Falco femoralis) Science Article 5 abstract A juvenile male Aplomado Falcon (Falcofemoralis) was observed to steal crayfish(Cambarus diogenes) from Little Blue Herons (Egretta caerulea). Crayfish are not known tobe a common prey item of the Aplomado Falcon. To our knowledge this is the first instanceof piracy reported for this falcon. Falcons of the […]
HUNTING ASSOCIATION BETWEEN THE APLOMADO FALCON (FALCO FEMORALIS) AND THE MANED WOLF (CHRYSOCYON BRACHYURUS) IN EMAS NATIONAL PARK, CENTRAL BRAZIL
Aplomado Falcon (Falco femoralis) Science Article 1 abstract Hunting associations between Aplomado Falcons (Falco femoralis) and maned wolf (Chrysocyon brachyurui) were observed in six occasions in Emas National Park. central Brazil. Falcons were successful in 25% of their hunting attempts. This association benefits the birds that hunt flushing tinamous missed by the wolf’s attack. The […]
Wing- and Tail-flapping in Anhingas: a Possible Method for Drying in the Absence of Sun
Anhinga (Anhinga anhinga) Science Article 1 abstract Anhingas (Anhinga anhinga) commonly spread their wings and perch in the sun, ostensibly to dry wettable feathers (Bent 1922, Life histories of North American Petrels and Pelicans and their allies, Washington,U .S. Natl. Mus. Bull. 230). The flight feathers themselves appear not to become appreciably wet, but the […]
BEHAVIOR AND SEX ROLES OF NESTING ANHINGAS AT SAN BLAS, MEXICO
Anhinga (Anhinga anhinga) Science Article 4 abstract Breeding behavior and sex roles of nesting Anhingas were studied in San Blas, Nayarit, Mexico during July and August 1975. The Anhingas nested in a mixed species colony of egrets, herons, and cormorants. The egg-laying period for Anhingas was 21 days. Anhingas built nests in the open areas […]
Energetics and Spread-Winged Behavior of Anhingas in Florida
Anhinga (Anhinga anhinga) Science Article 2 abstract Metabolic rates and body temperatures of four captive Anhingas(Anhinga anhinga) were measured over a range of ambient temperatures. In addition,Anhingas were observed in the field in an attempt to correlate the frequencyof behaviors, such as wing-spreading, with environmental conditions, such as theintensity of solar radiation and ambient temperature. […]