Weather and Bird Behaviour (Poyser Monographs)
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Seller Inventory More information about this seller Contact this seller. Brand New Book. Seller Inventory AA New Book. Shipped from UK. Established seller since Seller Inventory FV Book Description Christopher Helm Ornithology, This third edition discusses in depth the various ways in which weather conditions influence bird behaviour. Weather conditions affect food and water availability, decisions about when and how to migrate, timing and success of reproduction, flight style and physical comfort. Series: Poyser Monographs.
Num Pages: pages, 8pp colour photos.
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Dimension: x x Weight in Grams: Seller Inventory V Book Description Christopher Helm Ornithology. Books ship from the US and Ireland. New copy - Usually dispatched within 2 working days. Seller Inventory B Book Description Bloomsbury, Condition: NEW. For all enquiries, please contact Herb Tandree Philosophy Books directly - customer service is our primary goal. Condition: Brand New. In Stock. Book Description T. Poyser Limited, Changes in the weather can significantly influence the environmental conditions under which wild birds must survive.
This book looks at the interaction of weather conditions and reproduction, migration, and other bird behavior. Third Edition. Weather and Bird Behaviour Poyser Monographs. Norman Elkins. Publisher: Poyser , This specific ISBN edition is currently not available. View all copies of this ISBN edition:. Birds By Night by Graham Martin describes the nocturnal behavior not just of owls and nightjars but of other species of birds we typically think of as diurnal.
The authors of Poyser volumes are usually people currently doing research on those species or subjects or in those locations. The noted British ornithologist J. Denis Summers-Smith spent his entire life studying the genus Passer , which includes the much-abused House Sparrow, which he dearly loved. The Sparrows by Summers-Smith is the definitive volume on all the species of these birds. He followed that with another Poyser title, In Search of Sparrows , which recounts his crazy adventures seeking all the House Sparrow relatives in some of the most out-of-the-way places on the globe.
Poyser is also justly famous for publishing state-of-the-art monographs on a variety of species. The two authors are experts in their field. Chris Waltho "has been watching eiders since he was a boy. For more than 40 years he has been involved in surveying and monitoring them in the Clyde area of Scotland. John Coulson does ecological research on seabirds and is the author of more than scientific publications. There's a lot more listed for both authors, but suffice it to say that if you are looking for two people who really know a lot about eiders you could not do better than Waltho and Coulson.
If you have never read a well-written monograph on a bird species, the depth of the information in a monograph can be mind blowing. In The Common Eider , 17 pages are dedicated to plumage, physical descriptions, and illustrations of male, female, and immature eiders. Details of the eiders' geographical distribution and movements fill another 39 pages. Common Eider. Photograph by Sandy Selesky.
You may have been watching eiders for most of your birding life, but how well do you really know the bird? The following information is just a little of what you can find in The Common Eider. For starters, this isn't the first book concerned with eiders. This is the earliest known publication solely dedicated to eider. Eiders have been sought after for their eggs, meat, and down.
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But in recent decades humans have caused even greater problems for these birds thanks to a seemingly never-ending series of oil spills and entrapments in fishing trawler nets. It is the largest and heaviest duck in the northern hemisphere, heavier even than some of the smaller geese like Brant and Barnacle. Because of their short, pointed wings, eiders also have one of the highest wing-loadings found in any flying bird. Somateria species have been known from fossils dating back at least to the Pleistocene.
There are at least seven recognized subspecies and fifteen biogeographic populations of eiders. Details of all are given in the book. Eiders can dive to depths that measure from 42 to 60 meters. Eiders, like many other seabirds, have well developed salt glands, one above each eye, so they can ingest seawater. But when incubating, these salt glands become dramatically reduced. Newly hatched duckling eiders also have very small salt glands and typically need some fresh water in order to survive.
While working on the Breeding Bird Atlas II , we were surprised to find two groups of young eider ducklings with the attendant adult females along the shore of Gooseberry Neck. One of the reasons that you see young eider ducklings off Westport and other areas on the Massachusetts South Shore is that Maine birds were introduced to the Penikese Islands in the early s. Because eiders are such hefty species, they are capable of taking the largest prey of any duck. The Common Eider lists different prey species that eiders have been found to eat.
More than half of these are mollusks, especially the blue mussel Mytilus edulis. About a quarter of the other prey items are crustaceans, and most of the rest are echinoderms. On certain parts of the British coast eiders have also learned to eat bread thrown at them by locals and even survive on discarded fish and chips.
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Because eiders can eat such different prey items as razor clams, sea urchins, or crabs, they have developed a wide variety of behaviors to hold the prey items in their bills and get them down the gullet. Imagine trying to eat a live crab with no hands. Eiders are in turn preyed upon by a number of interesting species.
Nesting eiders are often prey to red and Arctic foxes. White-tailed Sea Eagles are significant predators of eiders where their ranges overlap. During the breeding season polar bears, brown bears, and even Snowy Owls all prey on eiders. So in The Common Eider you learn that on a certain island in Germany, hedgehogs became a significant predator on eider eggs, while in southwest Finland, eider nests fall victim to the appetites of the unusual raccoon dog Nyctereutes procyonoides.
The most interesting chapters in The Common Eider are concerned with breeding, nesting, and raising young pages — Eiders nest in a range of densities, from isolated pairs to or more nests per hectare.
Weather And Bird Behaviour by Norman Elkins
Are they in fact colonial or just, in some cases, nesting close together because of a local shortage of suitable nesting habitat? This is more than just a question of semantics, as the authors point out, because it affects management strategies. It is often stated that eiders who nest near gull colonies do not fare well because of predation.
But Waltho and Coulson cite other researchers who claim that, although gulls take eggs and young, there may be greater overall advantages to nesting near gull colonies. Gulls can protect the eiders from more persistent predators like crows. The differences in nest predation rates were statistically significant in both and , and were attributed to the protection from avian predators provided by nesting gulls.