M v hounsome (9 risultati)

Soft cover. Condizione: Very Good. 80 pages. • "Nocturnal and diurnal activity patterns and roosting sites of green sandpipers Tringa ochropus wintering in southern England" (pp. 315-322): A radio-telemetry study showing how wintering green sandpipers alternate between watercress beds and gravel pits, dramatically increasing night-time foraging during extreme cold. • "Sexing first year reed buntings Emberiza schoeniclus using biometrics" (pp. 327-331): A paper providing methods to accurately sex juvenile reed buntings using combined wing and weight measurements. • "Separation of marsh tits Parus palustris and willow tits Parus montanus" (pp. 323-326): An evaluation of handheld criteria for identifying these visually similar species, establishing tail shape as the most reliable diagnostic feature. • "Funnel traps capture a higher proportion of juvenile great tits Parus major than automatic traps" (pp. 257-259): Research documenting age and body condition biases associated with multi-capture decoy funnel traps. • "Mass and visible fat scores of skylarks Alauda arvensis in winter": An analysis tracking seasonal mass variations and winter fattening behaviors in skylarks. • "The seasonal pattern of numbers, population structure and migration of purple sandpipers Calidris maritima in Orkney" (pp. 275-282). • "Papers from ringing group reports" (pp. 332-336): A compiled summary review of localized ornithological publications (SL#17/1).…

Soft cover. Condizione: Very Good. 96 pages. Illustrated. • "Migration patterns of Common Gulls Larus canus ringed in the non‐breeding season in Copenhagen and the surrounding area" • Authors: Multiple contributors. • Focus: Analysis of 11,824 recovery records tracking the southwest-northeast seasonal migration pathways of common gulls passing through Denmark. • "Sexing Blue Tits Parus caeruleus during the winter, with comments on reporting sexing criteria" • Focus: Evaluating the reliability and dimorphism variances of winter sexing methods between local populations in East Sussex and Scotland. • "Changes in body mass of Common Guillemots Uria aalge in southeast Scotland throughout the year: Implications for the release of cleaned birds" • Focus: Highlighting cyclical mass shifts in wild guillemots vs. treated/rehabilitated birds from rescue centers, exploring why post-release survival remains low. • "Movements of Dippers Cinclus cinclus in southwest Ireland" • Focus: Exploring gender-based dispersal differences, finding that female dippers travel greater distances and cross watersheds more frequently than males. • "The partial migration of Fennoscandian Greenfinches Carduelis chloris" • Author: Iain G. Main • Focus: Utilizing data from 14 international ringing schemes to map out age and sex-related discrepancies in the migratory routes of Norwegian, Swedish, Finnish, and Danish greenfinches. • "Bird ringing in Britain and Ireland in 1997" • Authors: Mike P. Toms, Jacquie A. Clark, and coordinators. • Focus: The official, comprehensive annual report detailing the numbers, trends, recaptures, and recoveries monitored via the BTO Ringing Scheme. (SL#17/2).…

Soft cover. Condizione: Very Good. 97 pages. • "What problems do local habitat change represent for the constant effort sites scheme?" (Pages 1-8) — This study addresses potential data biases in the Constant Effort Sites (CES) scheme caused by localized environmental changes. • "Biometrics amongst Dippers Cinclus cinclus in the north of Spain" (Pages 9-14) — Research analyzing the physiological and biometric traits of Dipper populations. • "Cases of serial descendant primary moult (Staffelmauser) in the Black‐shouldered Kite Elanus caeruleus" (Pages 15-18) — A paper examining the complex feather-moulting sequence observed in this bird of prey. • "Autumn vagrancy: 'Reverse migration' and migratory orientation" (Pages 35-38) — A viewpoint article by John Phillips exploring the mechanisms behind unusual navigation patterns in vagrant birds. (SL#17/1).…

Soft cover. Condizione: Very Good. 68 pages. (BT#37).

Soft cover. Condizione: Very Good. 68 pages. (BT#37).

Soft cover. Condizione: Very Good. 68 pages. (BT#37).

Soft cover. Condizione: Very Good. 68 pages. (BT#37).

Soft cover. Condizione: Very Good. 68 pages. (BT#37).

Soft cover. Condizione: Very Good. 68 pages. (BT#37).