Lesser White-fronted Goose (Anser erythropus) Science Article 1 abstract Analyses of mitochondrial control region sequences were used to infer phylogeny of Anser species,phylogeography of the lesser white-fronted goose, and genetic background of a captive stock.The genetic distances among the Anser species ranged from 0.9 to 5.5% in the complete controlregion sequences and supported the view […]
Category: Anseriformes
A note on the Lesser White-fronted Goose Anser erythropus in Sweden and the result of a reintroduction scheme.
Lesser White-fronted Goose (Anser erythropus) Science Article 2 abstract The Lesser White-fronted Goose has been afairly common breeding bird in the northern andmiddle parts of the Scandinavian mountain range.Since a few decades the species is threatened todisappear completely from Fenno-scandia (Norderhaug& Norderhaug 1984), where the populationin 1980 was estimated at 60-90 breeding pairsand 160-260 birds. […]
ASPECTS OF THE BIOLOGY OF THE HORNED SCREAMER IN SOUTHWESTERN COLOMBIA
Horned Screamer (Anhima cornuta) Science Article 1 abstract An isolated population of the Homed Screamer (Anhima cornuta) in the Cauca Valley, Colombia, was studied intensively during 1983-1984. Variation of head plumage allowed me to identify individuals. This group of approximately 25 adults is the only breeding population of the species in southwestern Colombia. Home ranges […]
RECORD OF THE HOODED MERGANSER (LOPHODYTESCUCULLATUS) IN ‘LOS PETENES’, NORTHWESTERNCAMPECHE, MEXICO
Hooded Merganser (Lophodytes cucullatus) Science Article 1 abstract The Hooded Merganser (Lophodytes cucullatus) is an uncommon migratory species (Robbinset al. 1983) that breeds from southeastern Alaska, south through Canada to northeasternand northwestern United States (AOU 1998). Octavio R. Rojas-Soto and Alejandro de Alba Bocanegra, ORNITOLOGIA NEOTROPICAL 13: 85-86, 2002 Download article download full text (pdf)
A Hooded Merganser from the Late Pleistocene of Oklahoma
Hooded Merganser (Lophodytes cucullatus) Science Article 3 abstract I have had the privilege of studying a number of small collections of more or less fragmentary fossil bird bones taken from various localities by Dr. Claude W. Hibbard and his associates. WILLIAM A. LUNK, The Condor, vol. 54 Download article download full text (pdf)
Courtship of the Hooded Merganser (Lophodytes cucullatus)
Hooded Merganser (Lophodytes cucullatus) Science Article 2 abstract On the afternoon of March 17, 1933, a warm, springlike day which had brought up the March migrants in goodly numbers, as we neared the west bank of the Ox-bow at Northampton, we glimpsed a flash of white close behind the bushes that grew on its verge. […]
Long-term climatic trend and body size variation in teal Anas crecca
Green-winged Teal (Anas carolinensis) Science Article 3 abstract A general warming of climate in the future may profoundly affect wildlife populations in terms of numbers, distribution and characteristics of the individuals, therefore leading to new challenges in terms of management and conservation. The effects of global warming can already be detected through the analysis of […]
The displays of the American green-winged teal
Green-winged Teal (Anas carolinensis) Science Article 5 abstract The displays of the European race of the Green-winged Teal (Anas crecca crecca) have been studied intensively (Lorenz, 1953, 1958; Lorenz and von de Wall, 1960; von de Wall 1963) but no detailed description has been published for the North American race (A. c. carolinensis). McKinney, F, […]
Early breeding teal Anas crecca use the best lakes and have the highest reproductive success.
Green-winged Teal (Anas carolinensis) Science Article 1 abstract Teal (Anas crecca) broods were studied in 1988-2003 in a boreal watershed comprising 51 permanent wetlands. Brood size of near-fledged ducklings was negatively related to the hatching date, i.e. early pairs had higher reproductive success than late pairs. However, brood size of newly hatched ducklings was not […]
Spring migration dates of teal Anas crecca ringed in theCamargue, southern France
Green-winged Teal (Anas carolinensis) Science Article 4 abstract The policy of the European Commission prohibits hunting of migratory birds while they travel to their breeding grounds. To date, spring migration dates of ducks have mainly been determined using bird counts, but the validity of this sometimes disputed method has never been tested. We used ring-recovery […]