Smaller bodies, longer wings, earlier migrations: Untangling the multiple impacts of climate warming on birds

When a University of Michigan-led research team reported last year that North American migratory birds have been getting smaller over the past four decades and that their wings have gotten a bit longer, the scientists wondered if they were seeing the fingerprint of earlier spring migrations.

from Phys.org - latest science and technology news stories https://ift.tt/35Iz7ZP

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