Red-stained Woodpecker (Veniliornis affinis) Science Article 1 abstract In reviewing species of the genus Veniliornis for a forthcoming book on the world’s woodpeckers I was able to reevaluate the status of Veniliornis chocoensis Todd (1919, Proc. Biol. Soc. Washington3 2: 116; chocoensis is treated universally as a race of V. cassini) and of V. cassinic […]
The nest and egg of Tachyphonus phoenicius
Red-shouldered Tanager (Tachyphonus phoenicius) Science Article 1 abstract Red-shouldered Tanager (Tuchyphonus phoenicius) is a medium-sized tanager which inhabits the Guianas, northern Brazil, southern Venezuela, and eastern Peru. F. HAVERSCHMIDT, Wilson Bulletin: Vol.68,No.4 Download article download full text (pdf)
Interactive effects of time and vegetation on reproductionof redshanks ( Tringa totanus) breeding in Wadden Sea salt marshes
Redshank (Tringa totanus) Science Article 1 abstract As shown for various species, nesting waders are non-randomly distributed on wetlands and preferentially select riparian nest-sites adjacent to limnic or marine waterbodies. Studying the redshank Tringa totanus, we tested the hypotheses that, in a coastal wader species which conceals its clutch in vegetation, predation and hatching success […]
Biometrics and wing moult of migrating Red-rumped Swallows Hirundo daurica in Greece
Red-rumped Swallow (Hirundo daurica) Science Article 1 abstract Published data describing the biometrics, moult and fat loads of migrant Red-rumped Swallows Hirundo daurica are scarce. Here we present data on wing and tarsus length, tail measurements, abdominal fat scores and weight for a sample of 457 birds captured at a reed-bed roost during autumn migration […]
Brood amalgamation in Red-necked Nightjars Caprimulgus ruficollis
Red-necked Nightjar (Caprimulgus ruficollis) Science Article 1 abstract The study of nocturnal birds supposes a serioushandicap for observers due to the restrictionsimposed by the lack of light and the scarcityof information about important aspects oftheir behaviour, such as adoption. In fact, alloparentalcare has not been described in caprimulgidsor any other group of nocturnal birds.Adoption is […]
Intruder pressure explains more of the variation in territory size than fish abundance for Red-necked Grebes (Podiceps grisegena) breeding on small boreal lakes
Red-necked Grebe (Podiceps grisegena) Science Article 2 abstract In the Red-necked Grebe (Podiceps grisegena), breeding pairs use both overt aggression and ritualistic behavior to defend territories for breeding and feeding. Examining the influence of factors determining territory size simultaneously continues to be stressed in studies of territorial systems. The behavior of grebes breeding on small […]
Red-necked grebes become semicolonial when prime nesting substrate is available
Red-necked Grebe (Podiceps grisegena) Science Article 1 abstract During 1995-1998 we studied the dynamics of nesting dispersion in a population of 160-200 Red-necked Grebes (Podiceps grisegena) on Lake Osakis, a large, windblown lake in central Minnesota. Breeding grebe pairs arriving on the lake were highly attracted to several large floating cattail (Typha angustifolia) mats that […]
Effects of Housing Type and Breeding System on the Reproductive Capacity of the Red-Legged Partridge (Alectoris rufa)
Red-legged Partridge (Alectoris rufa) Science Article 1 abstract Current methods of intensive breeding of the red-legged partridge (Alectoris rufa) are based on ‘industrial’ laying practices, including removal and artificial incubation of eggs. These procedures can alter the reproductive behavior and physiology of the birds and, therefore, may not be suitable for use in breeding programs […]
Sex- and age-related variation in plasma carotenoids despite a constant diet in the Red-legged Partridge Alectoris rufa
Red-legged Partridge (Alectoris rufa) Science Article 2 abstract We studied seasonal variation in plasma carotenoid levels of captive Redlegged Partridges Alectoris rufa in relation to sex, age and condition. The legs, bill and eye lores in this species are bright red due to carotenoid pigments. Carotenoid levels in the plasma varied significantly among sampling periods. […]
CAUSES AND CONSEQUENCES OF INGESTED LEAD PELLETS IN CHUKARS
Red-legged Partridge (Alectoris rufa) Science Article 4 abstract Lead-pellet ingestion andthe resulting toxicosis are well-documented in waterfowl,raptors, and Mourning Doves (Zenaidamacroura) (Kendall et al. 1996). R. JUSTIN BINGHAM et al, US Geological Survey – Utah Cooperative Fish and Wildlife Research Unit Download article download full text (pdf)