Crows outthink monkeys, can grasp recursive patterns
Crows are notoriously clever — the songbirds can use tools, understand the concept of zero and follow basic analogies. Now, a new study suggests that their grasp of one complex cognitive principle, in particular, is better than that of monkeys and comparable to that of small children.
Migratory birds in North America are shrinking as their wings get bigger. Climate change is to blame.
A new study finds that north American migratory birds are becoming smaller as the planet warms due to climate change. Researchers from the University of California, Los Angeles (UCLA) examined more than 30 years of data for adult male birds across 105 avian species that migrate through North America. They found that between 1989 and 2018 the birds' body masses declined by about 0.6% on average, according to an Oct. 27 study in the journal Nature Ecology and Evolution(opens in new tab).
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