By Ian Sinclair
Характеризует 750 видов южноафриканских птиц, включая не только резидентные и размножающиеся, но и большинство мигрантов. Фотографии, многие их которых демонстрируют птиц в полете, иллюстрируют разнообразие форм и раскрасок.
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Extra resources for A Photographic Guide to Birds of Southern Africa
One day this insect, just one of which would represent a good meal for a Woodhen, might be reintroduced to Lord Howe. For this to be successful, the island needs to be rid of rats and mice that would certainly eat the insect’s eggs and nymphs, if not also its adults. A careful assessment of appropriate methods of rodent eradication is under way (see Chapters 5 and 11). This would be no mean achievement, as every last female of each rodent species must be exterminated. Then it is simply a matter of ensuring that no female rodent ever gets ashore again!
In the 1960s three dead specimens were serendipitously found on rat-free Balls Pyramid. Numerous expeditions followed this exciting discovery in the hope of finding living examples, but it was not until February 2001, when three living individuals were observed, that this happened. In March 2002, a follow-up expedition found 24 live specimens. They exist there on but a single rocky terrace, measuring some 30 by 6 m, where they associate exclusively with six Melaleuca howeana shrubs as their food plant (Department of Environment and Climate Change NSW 2007).
Also, the toes of species spending much time on submerged and semi-submerged aquatic vegetation are relatively long, in order to spread their body weight over a greater surface area. The legs of the terrestrial Woodhen are particularly large, stout and powerful (Fig. 8). The various species of rails are typically dully cryptic in plumage, being pigmented with browns, rufous, buffs, olives, greys, black and white in different combinations. Their underparts are often barred with black or other dark pigment on a paler ground colour.