Tree Sparrow (Passer montanus) Science Article 1 abstract A total of 250 nestboxes were arranged in five plots in a suburban area of Budapest, Hungary (19 deg 04’E, 47 deg 41’N). In each plot, 25 were placed at 50 m intervals to simulate solitary breeding and 25 3-5 m apart to simulate colonial breeding. Length […]
Fitness consequences of hybridization between house sparrows( Passer domesticus) and tree sparrows ( P. montanus)
Tree Sparrow (Passer montanus) Science Article 2 abstract Gene transfer may occur following hybridization between closely related species if hybrids are viable and able to breed with individuals of one or both of the parental species. House (Passer domesticus) and tree sparrows (P. montanus) occasionally hybridize and produce viable o.spring. Previously, we concluded that male […]
Nightjar Caprimulgus europaeus and Woodlark Lullula arborea – recovering species in Britain?
Tree Pipit (Anthus trivialis) Science Article 2 abstract The Nightjar Caprimulgus europaeus and Woodlark Lullula arborea are identified as species of conservation concern at both a UK and a European level on account of historical declines in their population sizes and ranges. The UK populations of both species have increased significantly in recent decades and […]
Influences of restock age and habitat patchiness on Tree Pipits Anthus trivialis breeding in Breckland pine plantations
Tree Pipit (Anthus trivialis) Science Article 1 abstract The British Tree Pipit Anthus trivialis population has shown a marked decline in recent decades, together with a range contraction that has been most apparent in central and southeast England. In East Anglia, the species is now largely restricted to heathland and, in particular, the conifer plantations […]
POSSIBLE SPECIALIZATION FOR HUMMINGBIRD-HUNTING IN THE TINY HAWK
Tiny Hawk (Accipiter superciliosus) Science Article 1 abstract This paper describes the hunting tactics of the Tiny Hawk, Accipiter superciliosusfontanieri, in a Costa Rican rain forest, where it appears to be a hummingbird specialist. Three tactics were used by the hawks to hunt hummingbirds: typical Accipiter still-hunting (probably not specifically for hummingbirds), waiting in ambush […]
Observations at a nest of Thrush-like Antpitta Myrmotheracampanisona in eastern Ecuador
Thrush-like Antpitta (Myrmothera campanisona) Science Article 1 abstract Thrush-like Antpitta Myrmothera campanisona is one of a species-pair in this genus belonging to the ground antbirds (Formicariidae). It is distributed from south-east Colombia, southern Venezuela and the Guianas to north-west Bolivia and Amazonian Brazil11. One race, signata, occurs in Ecuador10. Brief descriptions of nests from French […]
Wingbeat frequency and the body drag anomaly: wind-tunnel observations on a thrush nightingale (Luscinia luscinia) and a teal (Anas crecca)
Thrush Nightingale (Luscinia luscinia) Science Article 1 abstract A teal (Anas crecca) and a thrush nightingale (Luscinia luscinia) were trained to fly in the Lund wind tunnel for periods of up to 3 and 16 h respectively. Both birds flew in steady flapping flight, with such regularity that their wingbeat frequencies could be determined by […]
Magnetic cues and time of season affect fueldeposition in migratory thrush nightingales(Luscinia luscinia)
Thrush Nightingale (Luscinia luscinia) Science Article 2 abstract Bird migration requires high energy expenditure, and long-distance migrants accumulate fat for use asfuel during stopovers throughout their journey. Recent studies have shown that long-distance migratorybirds, besides accumulating fat for use as fuel, also show adaptive phenotypic flexibility in several organsduring migration. The migratory routes of many […]
Stone-curlews Burhinus oedicnemus and recreational disturbance: developing a management tool for access
Thick-knee (Burhinus oedicnemus) Science Article 2 abstract Stone-curlews Burhinus oedicnemus have a vulnerable population status in the UK after a large population decline and range contraction since the 1930s. Much Stone-curlew breeding habitat is open-access land designated under the Countryside and Rights of Way Act 2000. In order to guide the conservation and habitat management […]
Seasonal variation of the diet of the Stone Curlew Burhinus oedicnemus distinctus at the island of La Palma, Canary Islands.
Thick-knee (Burhinus oedicnemus) Science Article 1 abstract In this study we describe seasonal variation in the diet of the Stone Curlew Burhinus oedicnemus distinctus at La Palma, one of the Western Islands of the Canary Archipelago. The study was conducted through f cal analysis. F ces were collected bimonthly and 266 f ces were examined. […]