Swifts and Us: The Life of the Bird that Sleeps in the Sky

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Swifts occur on all the continents except Antarctica, but not in the far north, in large deserts, or on many oceanic islands. [14] The swifts of temperate regions are strongly migratory and winter in the tropics. Some species can survive short periods of cold weather by entering torpor, a state similar to hibernation. [13] The Apodiformes diversified during the Eocene, at the end of which the extant families were present; fossil genera are known from all over temperate Europe, between today's Denmark and France, such as the primitive swift-like Scaniacypselus [5] (Early–Middle Eocene) and the more modern Procypseloides (Late Eocene/Early Oligocene – Early Miocene). A prehistoric genus sometimes assigned to the swifts, Primapus (Early Eocene of England), might also be a more distant ancestor.

Swifts by Beth Lincoln | Waterstones The Swifts by Beth Lincoln | Waterstones

Boersma, P Dee (1982). "Why some birds take so long to hatch". The American Naturalist. 120 (6): 733–750. doi: 10.1086/284027. JSTOR 2461170. S2CID 83600491. Piper, Ross (2007), Extraordinary Animals: An Encyclopedia of Curious and Unusual Animals, Greenwood Press, The book explains the basics of Swift including writing comments, writing and running the first Swift program, Swift syntax, etc. The book will help you to:

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The second edition of this highly acclaimed book has been extensively revised by the author to take account of recent information, most particularly about the neotropical swifts, and several plates have been revised by the artist. The nest of many species is glued to a vertical surface with saliva, and the genus Aerodramus use only that substance, which is the basis for bird's nest soup. Other swifts select holes and small cavities in walls. [15] The eggs hatch after 19 to 23 days, and the young leave the nest after a further six to eight weeks. Both parents assist in raising the young. [13] Swifts live in perpetual summer. They inhabit the air like nothing else on the planet. They watched the continents shuffle to their present positions and the mammals evolve. They are not ours, though we like to claim them. They defy all our categories and present no passports as they surf the winds across the world. They sleep in the air, their wings controlled by an alert half-brain. Yet for all their adaptability and longevity swifts have recently been added to the UK’s Red List of endangered birds.

Swifts and Us The Life of the Bird that Sleeps in the Sky - NHBS

On the Biology of Five Species of Swifts (Apodidae, Cypseloidinae) in Costa Rica Manuel A. Marin, Gary F. Stiles Proceedings Volume 4, Number 4 Martins, Thais; Mead, Christopher J. (2003). "Swifts". In Perrins, Christopher (ed.). The Firefly Encyclopedia of Birds. Firefly Books. pp. 346–350. ISBN 1-55297-777-3.The Breeding Distribution and Habitats of the Pied Flycatcher (Muscicapa Hypoleuca) in Britain - Bruce Campbell Chantler, Phillip; Driessens, Gerald (2000). Swifts: A Guide to the Swifts and Treeswifts of the World. London: Pica Press. ISBN 1-873403-83-6. del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi; Christie, David A.; de Juana, Eduardo (eds.). "Apodidae". Handbook of the Birds of the World Alive. Lynx Edicions . Retrieved 10 September 2013.

Books About Birds: Swifts

Swifts are among the fastest of birds in level flight, and larger species like the white-throated needletail have been reported travelling at up to 169km/h (105mph). [7] Even the common swift can cruise at a maximum speed of 31 metres per second (112km/h; 70mph). In a single year the common swift can cover at least 200,000km, [8] and in a lifetime, about two million kilometers. [9] The wingtip bones of swiftlets are of proportionately greater length than those of most other birds. Changing the angle between the bones of the wingtips and forelimbs allows swifts to alter the shape and area of their wings to increase their efficiency and maneuverability at various speeds. [10] They share with their relatives the hummingbirds a unique ability to rotate their wings from the base, allowing the wing to remain rigid and fully extended and derive power on both the upstroke and downstroke. [11] The downstroke produces both lift and thrust, while the upstroke produces a negative thrust (drag) that is 60% of the thrust generated during the downstrokes, but simultaneously it contributes lift that is also 60% of what is produced during the downstroke. This flight arrangement might benefit the bird's control and maneuverability in the air. [12] Kaufman, Kenn (2001). Lives of North American Birds. Oxford: Houghton Mifflin Harcourt. ISBN 0-618-15988-6. I always recommend pairing your book with another learning resource, like an interactive or video course, for maximum absorption. I have some options for you — and some of them are free.What is even more amazing than what we learn about swifts is how little we know about them, still. Until 1943, when hunters in a Peruvian rainforest flushed out 13 ringed birds from a hollow tree, observers north and south of the equator had no idea where swifts went for half of the year, and we’re still not much the wiser. The birds’ scientific name, Apus apus, comes from a Greek root word meaning “footless” because of an ancient belief that they never landed; in the 17th century, British swift watchers thought they flew to the moon in winter. Now, thanks to a recent Swedish study, we know that in the non-breeding season, many birds spend 99% of their time flying, eating and sleeping on the wing, and some never land at all. Appreciate the power of Swift as a programming language for the development of mobile applications. The book includes detailed instruction, ample illustrations, and clear examples. It teaches you best practices from an experienced Mac and iOS developer. The book emphasizes how to use Xcode, Playgrounds, and REPL.

Swift (bird) - Wikipedia Swift (bird) - Wikipedia

Hobbs, Joseph J (2004). "Problems in the harvest of edible birds' nests in Sarawak and Sabah, Malaysian Borneo". Biodiversity and Conservation. 13 (12): 2209–2226. doi: 10.1023/b:bioc.0000047905.79709.7f. S2CID 34483704.Swifts: A Guide to the Swift and Treeswifts of the World Phil Chantler Illustrations: Gerald Driessens Udemy: Udemy offers iOS 13 & Swift 5 - The Complete iOS App Development Bootcamp, which is a highly-rated bestselling course with hours of video content walking through everything you need to learn Swift. Many swifts spend 99% of their time flying, eating and sleeping on the wing, and some never land at all