Weather and Bird Behaviour, Third Edition by Norman Elkins

By Norman Elkins

This vintage Poyser name, now in its 3rd revised variation, discusses intensive a few of the ways that climatic conditions effect fowl behaviour. climatic conditions impact nutrition and water availability, judgements approximately while and the way emigrate, timing and good fortune of replica, flight kind, and actual convenience. Birds exhibit many variations in shape and behavior that aid them to deal with altering climatic conditions, and this attention-grabbing e-book makes use of a very good number of examples to discover the topic extensive. The textual content is better all through with evocative line drawings, there are numerous worthy tables and figures, and there's additionally an 8pp color photo part.

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Additional resources for Weather and Bird Behaviour, Third Edition

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The vast thunderstorms and tornadoes common on the Great Plains in spring are a prime example. Southern and eastern regions are also subject to tropical storms approaching from subtropical waters to the southeast. These do not have frontal characteristics of their own but may, if their later tracks take them north, engage or delay polar fronts. Other ‘lows’ may be formed without organised frontal systems, particularly in areas of convection such as thunderstorms. Although disturbances on the surface are frequently transient, the large-scale waves in the mid and upper troposphere are more slow-moving.

Troughs of cold air and ridges of warm air indicate the latitudinal movement of cold and warm airmasses. Pools of cold and warm air north of the front are associated with the circulation of mature depressions. The heavy line marks the approximate southern limit of the polar air, including the frontal zone. Where the latter is weak, the line is dashed. The surface position of the sloping front is on the warm side of the 500 hPa position (from Bradbury and Palmén 1953). The warm airmass to the south of a waving polar front is known as the warm sector.

Arctic seabirds tend to appear in Britain after winter gales from northerly directions. (Author) CHAPTER 12 Plate 31. Satellite image of sea fog. 1516 hrs 24th May 1987. The right hand frame shows a visible image in which a large (bright) area of sea fog is lapping across the east coast of northern England and Scotland. Seas clear of fog show black while land clear of fog is pale (sunlit). The left hand frame shows an infra-red image at the same time, showing the warm (black) land with the fog top over the coast and sea much cooler (paler).

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