For decades, scientists have been uncertain whether common redpolls and hoary redpolls were really distinct species. Now, a team of researchers has sequenced the genomes of both birds and found that they're actually the same species.

The Study

The study, published in the journal Current Biology, was led by researchers at the University of California, Berkeley. The team sequenced the genomes of eight common redpolls and eight hoary redpolls. They then compared the genomes and found that they were 99.8% identical.

The Findings

The researchers also found that the two birds had very similar vocalizations and behaviors. They concluded that common redpolls and hoary redpolls are actually the same species.

The Implications

The study has important implications for the conservation of redpolls. Both common redpolls and hoary redpolls are declining in numbers due to habitat loss and climate change. By recognizing that they are the same species, conservationists can now focus on protecting their habitat and ensuring their survival.

The Redpolls

Common redpolls and hoary redpolls are small, colorful birds that are found in North America and Eurasia. They are both red-breasted birds with black wings and tails, and they have distinctive facial markings. Common redpolls have a red crown and a black bib, while hoary redpolls have a white crown and a gray bib.

The History

Common redpolls and hoary redpolls were first described as distinct species in the 18th century. However, scientists have long debated whether they were really different species, as they are very similar in appearance and behavior.

The Conclusion

The new study has finally settled the debate: common redpolls and hoary redpolls are the same species. This finding has important implications for the conservation of redpolls and will help to ensure their survival.