A large number of Monarch butterflies have been seen in their migratory funnel in Cape May. N.J. instead of across the Texas-Mexico border. This delayed migration is not normal, and it alarmed monarch researchers across the country. The Cape May stragglers were only a sliver of the record number of monarchs reported in the Northeast in November and December — news that sounded good initially to conservationists. But seeing butterflies so far north so late in the year suggested that few of these latecomers would reach their Mexican wintering grounds. Scientists fear that climate change is behind what they’re calling the latest monarch migration ev er recorded in the eastern United States, and they worry that rising temperatures pose a new threat to a species that saw its population hit record lows in recent years.
Known for their complex, improbable migrations, most monarchs embark on 2,000-mile journeys each…
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