2/9/2024 0 Comments Pygmy falcon size![]() Wir dokumentierten 66 individuelle Halsband-Zwergfalken-Reviere und 323 Brutversuche in der Kalahari, Südafrika. Wir präsentieren hier die Ergebnisse einer zehnjährigen Datenerfassung zwischen 20. Bislang gibt es allerdings noch keine detaillierte Untersuchung ihrer Brutbiologie auf der Basis von Langzeitdaten. Halsband-Zwergfalken beeinflussen als Prädatoren höchstwahrscheinlich die Beutetiergemeinschaften in diesem System, einschließlich ihrer Wirtsart sowie anderer Koloniebewohner. Der Halsband-Zwergfalke Polihierax semitorquatus, Afrikas kleinster tagaktiver Beutegreifer, hat sich im Laufe seiner Evolution in seinem gesamten südafrikanischen Verbreitungsgebiet zum obligaten Begleiter von Siedelweber ( Philetairus socius)-Kolonien entwickelt. Our results show significant variation in the breeding parameters of these falcons, but further studies are needed to understand what drives these variations.īrutbiologie afrikanischer Halsband-Zwergfalken: langfristige Variation und saisonales Absinken des Bruterfolges bei einer Falkenart der Trockengebieteįalken und Greifvögel gehören zu den Spitzenprädatoren, daher kann die Kenntnis ihrer Biologie als nützlicher Ausgangspunkt für die Erforschung ihrer Rolle im Ökosystem dienen. Predation accounted for 49.5% of breeding failures. Falcons were 7 times less likely to lay a 3-egg clutch in 2019 than in 20, and breeding attempts initiated in September were 3.4 times more likely to be successful than those initiated in November. A three-egg clutch size and number of fledglings produced varied between seasons, and breeding success showed a seasonal decline across the breeding season. The incubation and nestling periods lasted on average 33 (±SD 4) and 37 (± 5) days, respectively. The maximum and most frequent clutch size was three eggs and falcons usually initiated only one breeding attempt (but up to three) in a season. Our results show that the breeding occurs between early austral spring (August) and late summer (February), with a peak from September to December. The highest average density was recorded in 2015 and the lowest in 20. We explored annual variation in the population density of Pygmy Falcons and investigated between- and within-season variation in reproductive investment and output. We followed 66 unique Pygmy Falcon territories and 323 breeding attempts in the Kalahari, South Africa. We provide results from 10 years of data collected between 20. However, no study has explored their breeding biology in detail using long-term data. As a predator, Pygmy Falcons likely impact prey communities in this system including their host and other colony associates. Pygmy Falcons ( Polihierax semitorquatus), Africa’s smallest diurnal raptor, have evolved to be obligate associates of Sociable Weaver ( Philetairus socius) colonies throughout their southern African range. ![]() Made with high quality nylon stitching, self-repairing YKK® zippers and a durable water-resistant exterior Maxpedition backpacks have multiple compartments and pockets and offer plenty of space for mission essentials, camping gear, hydration reservoirs, laptops, textbooks and CCW.Birds of prey are apex predators and understanding their life history can serve as a valuable baseline for investigating their ecological role. Curvaceous, foam-padded double shoulder straps contour to your chest and a sternum suspension belt helps distribute weight evenly throughout your upper body, so you can carry a load without falling behind. Maxpedition backpacks are built for hauling gear and ergonomically designed to never drag you down. main compartment has full clamshell opening.3D breathable mesh padded back and shoulder straps.dual side mesh pouches to accommodate two water bottles.It's the perfect everyday backpack with comfortable back padding and ergonomic, supple curvaceous straps and sternum support minimize any stress on the shoulders. The Pygmy Falcon-II has exterior PALS webbing for adding on other Maxpedition pouches and accessories, using 3" TacTie® Attachment Straps and 5" TacTie® Attachment Straps. The Y-shaped compression strap that Maxpedition is so famous for contributes to the bag's form and structural integrity. Pack for a day out or an overnight and take along plenty of water, as the Pygmy Falcon-II is equipped with dual side mesh pouches to accommodate two 32oz / 1L water bottles. A compact rectangular urban day pack with distinct military styling and 1100 cubic inches (18 liters) of carry capacity.
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