The text boxes in the left panel have been placed in a random order. Restore the original order by dragging the text boxes from the left panel to the right panel.
左栏的文本框排列顺序是乱的。请把它们拖到右栏，恢复成原文的正确顺序。
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1According to experts, feeding birds is probably the most common way in which people interact with wild animals today.
2Is what we're doing good or bad for birds?
3Preliminary results suggest the species visiting our feeders the most are faring exceptionally well in an age when one-third of the continent's birds need urgent conservation.
4More than 50 million Americans engage in the practice, collectively undertaking an unwitting experiment on a vast scale.
5Recently, researchers at the Cornell Lab of Ornithology sought to answer this question, analyzing nearly three decades'worth of data from a winter-long survey called Project Feeder Watch.
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