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“Many creatures are mistiming their migrations (due to a warmer climate), or failing to bother as changes between seasons become less clear. The shifts make them vulnerable to heat-waves, droughts or cold snaps. They are the most visible warning signs — indicators signaling the dramatic changes to our ecosystems caused in part by climate change.”

– Lahcen el Kabiri, deputy head of the U.N.’s Convention on Migratory Species