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Where Have All the Hummingbirds Gone? http://apocadocs.com/s.pl?1338839772
The glacier lily as it's called, is a tall, willowy plant that graces mountain meadows throughout western North America. It flowers early in spring, when the first bumblebees and hummingbirds appear. Or did.
The lily, a plant that grows best on subalpine slopes, is fast becoming a hothouse flower. In Earth's warming temperatures, its first blooms appear some 17 days earlier than they did in the 1970s, scientists David Inouye and Amy McKinney of the University of Maryland and colleagues have found.
The problem, say the biologists, with the earlier timing of these first blooms is that the glacier lily is no longer synchronized with the arrival of broad-tailed hummingbirds, which depend on glacier lilies for nectar.
By the time the hummingbirds fly in, many of the flowers have withered away, their nectar-laden blooms going with them.
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[Read more stories about:
bird collapse, anthropogenic change, koyaanisqatsi]
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