Eurasian Eagle-Owl (Bubo bubo) Science Article 10 abstract Little quantitative information on the development and behaviour of chicks and young is available for many species, despite the crucial importance of such data and the sensitivity of this stage in a bird’s life. For Eagle Owls Bubo bubo, despite the large amount of scientific literature on […]
Reproductive success of a reintroduced population of Eagle Owls Bubo bubo in relation to habitat characteristics in the Eifel, Germany.
Eurasian Eagle-Owl (Bubo bubo) Science Article 8 abstract Eagle Owls Bubo bubo were successfully reintroduced in the Eifel (Germany) in 1974-1999. Here we analyse whether reproductive success was related to habitat characteristics and if the patterns of habitat use and reproduction changed during the population increase. Microclimatic as well as mesoclimatic conditions influenced reproductive success. […]
HABITS OF THE ESKIMO CURLEw IN NEW ENGLAND.
Eskimo Curlew (Numenius borealis) Science Article 1 abstract From the shores of the Arctic Ocean, Where they breed, to Patagonia, where they probably Winter (Ibis, 1878, page 404), is a journey of seven thousand miles; yet the Eskimo CurleWs, familiarly known as Doughbirds, compass it every year on their migrations. GEORGE h. MACKAY, The AUK(9)1:16-21, […]
EXPLOITATION OF Erythrina dominguezii Hassl. (Fabaceae)NECTAR BY PERCHING BIRDS IN A DRY FOREST INWESTERN BRAZIL
Epaulet Oriole (Icterus cayanensis) Science Article 1 abstract Among the vertebrate pollinated plants, the genus Erythrina includes tree species in which birds arethe pollen vectors. Two groups in this genus may be distinguished: a) the hummingbird, and b) theperching bird pollinated species. Erythrina dominguezii is included in the second group and occursin deciduous/semi-deciduous forests in […]
The study of nest-site preferences in Eleonora’s falcon Falco eleonoraethrough digital terrain models on a western Mediterranean island
Eleonoras Falcon (Falco eleonorae) Science Article 2 abstract This study addresses nesting-site preferences in Eleonora’s falcon Falco eleonorae by means of geographic information systems and high-quality high-resolution digital terrain models (DTMs). A small western Mediterranean archipelago (Columbretes Islands) with a colony of 34 pairs was chosen as a case study. Overall, 21 grid variables obtained […]
Soaring Flight in the Eleonora’s Falcon (Falco eleonorae)
Eleonoras Falcon (Falco eleonorae) Science Article 3 abstract Eleonora’s Falcon (Falco eleonorae)breeds in the Mediterranean region and is highlyadapted for catching small birds on passage migrationbetween Eurasia and their African winter quarters,which they feed their young.We studied glidingflight behavior of Eleonora’s Falcon at a breeding colonylocated on a small island southwest of Sardinia,Italy. Gliding and […]
Is growing tourist activityaffecting the distribution ornumber of breeding pairs ina small colony of the Eleonora’s Falcon?
Eleonoras Falcon (Falco eleonorae) Science Article 4 abstract Is growing tourist activity affecting the distribution or number of breeding pairs in a small colony of theEleonora’s Falcon?
Flight performance during hunting excursions in Eleonora’s falcon Falco eleonor
Eleonoras Falcon (Falco eleonorae) Science Article 1 abstract Among birds, falcons are high-performance flyers, in many cases adapted for rial hunting and hence suitable targets for investigating limits to flight performance. Using an optical range finder, we measured flight tracks of Eleonora’s falcon (Falco eleonor ), a species breeding in the Mediterranean region and specialised […]
FURTHER RECORDS OF ELEGANT TERNS STERNA ELEGANS IN COLOMBIAAND THEIR GEOGRAPHIC SOURCE
Elegant Tern (Thalasseus elegans) Science Article 1 abstract The Elegant Tern (Sterna elegans) is widely distributed on the Paci?c coast of the Americas from British Columbia to Chile (Anonymous 1998, Burness et al. 1999). Despite this broad range, breeding is currently restricted to ?ve breeding colonies, two in the northern Gulf of California, Mexico, and […]
CAROTENOIDS PRODUCE FLUSH IN THE ELEGANT TERN PLUMAGE
Elegant Tern (Thalasseus elegans) Science Article 3 abstract Adult Elegant Terns (Sterna elegans), Roseate Terns (S. dougallii), many gulls (Laridae), several pelicans (Pelecanus spp.), the Common Merganser (Mergus merganser), and ptarmigans (Lagopus spp.) display a pink flush on their white body feathers (Stresemann 1927-1934; see also Vijlker 1964, Hijhn and Singer 1980, Harrison 1983). Called […]