The first comprehensive map of hummingbirds' 22-million-year-old family tree -- reconstructed based on careful analysis of 284 of the world's 338 known species -- tells a story of rapid and ongoing diversification.Speed Dating Hong Kong
The decade-long study reported in the Cell Press journal Current Biology on April 3 also helps to explain how today's hummingbirds came to live where they do. hold back these tears I cry
Part of the secret to the birds' remarkable success lies in the formation of nine principal groups or clades, hummingbirds' unique relationship to flowering plants, and the birds' continued spread into new geographic areas, the researchers say.cherish baby lovely blush
"Hummingbirds have essentially been reinventing themselves throughout their 22-million-year history," says Jim McGuire of the University of California, Berkeley. mess up my intentions
While all hummingbirds depend on flower nectar to fuel their high metabolisms and hovering flight, coordinated changes in flower and bill shape have helped to drive the formation of new species of both hummingbirds and plants.star shine in black hole
Remarkably, as many as 25 hummingbird species are able to coexist in some places.
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