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Changes to a seemingly simple event
3 years ago
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Migrating pied flycatcher birds, however,aren't doing as well.The birds prefer to feed their chicks winter moth caterpillars.The caterpillars are now hatching earlier,but the birds' chicks are not.This delay is costing the birds a food source.The pied flycatcher population has decreased by up to 90% in some areas as a result.Changes to a seemingly simple event,leaves opening,has ripple effects throughout a food web.Earlier bloom times can also have an economic impact.The famed cherry blossoms in Washington D.C.are blooming five days earlier than before.Since the cherry trees are blooming earlier,the blossoms also fade earlier,frustrating thousands of tourists who visit for the Cherry Blossom Festival.
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