The white-eyes and yuhinas are family of generalist, warbler-like birds confined to the Old World. Almost 150 species are recognised in 12 to 14 genera, with more than 100 species of white-eyes in the genus Zosterops, which is by far the largest bird genus. The enormous diversity of white-eyes results in large part from their powers of dispersal, which has seen them colonise many of the islands in the Western Pacific and Indian oceans.
This exploration is ongoing. The Silvereye Z. lateralis arrived in New Zealand from Australia in the 1850s and since then has gone on to colonise all the sub-Antarctic islands south of New Zealand. Yet once they reach farflung islands, not all white-eyes are good dispersers. In the Solomon Islands, some quite distinct species have evolved on islands only a few kilometres apart. As a result, many white-eyes are single-island endemics.
Diese Geschichte stammt aus der March 2023-Ausgabe von African Birdlife.
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Diese Geschichte stammt aus der March 2023-Ausgabe von African Birdlife.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
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EXPLORING NEW HORIZONS
Keith Barnes, co-author of the new Field Guide to Birds of Greater Southern Africa, chats about the long-neglected birding regions just north of the Kunene and Zambezi, getting back to watching birds and the vulture that changed his life.
footloose IN FYNBOS
The Walker Bay Diversity Trail is a leisurely hike with a multitude of flowers, feathers and flavours along the way.
Living forwards
How photographing birds helps me face adversity
CAPE crusade
The Cape Bird Club/City of Cape Town Birding Big Year Challenge
water & WINGS
WATER IS LIFE. As wildlife photographer Greg du Toit knows better than most.
winter wanderer
as summer becomes a memory in the south, the skies are a little quieter as the migrants have returned to the warming north. But one bird endemic to the southern African region takes its own little winter journey.
when perfect isn't enough
Egg signatures and forgeries in the cuckoo-drongo arms race
Southern SIGHTINGS
The late summer period naturally started quietening down after the midsummer excitement, but there were still some classy rarities on offer for birders all over the subregion. As always, none of the records included here have been adjudicated by any of the subregion's Rarities Committees.
flood impact on wetland birds
One of the features of a warming planet is increasingly erratic rainfall; years of drought followed by devastating floods. Fortunately, many waterbirds are pre-adapted to cope with such extremes, especially in southern Africa where they have evolved to exploit episodic rainfall events in semi-arid and arid regions. But how do waterbirds respond to floods in areas where rainfall - and access to water - is more predictable? Peter Ryan explores the consequences of recent floods on the birds of the Western Cape's Olifants River valley.
a star is born
It’s every producer’s dream to plan a wildlife television series and pick the right characters before filming.
