A new study published in the journal PNAS has used ancient DNA to study Caribbean parrots and their genetic sequences compared to modern birds. The study showed that two species of parrots that were thought to only live on certain islands were actually more widespread and diverse in the past. This helps to explain why parrots are now the most endangered group of birds in the world, with 28% of all species considered to be threatened. Humans have had a complicated history with parrots, moving them across continents and between islands for thousands of years. This has made it difficult for researchers to understand where parrots originally came from. However, parrots have been found in archaeological sites, which has helped to provide more information. The study also used DNA analysis to determine the species of parrots from broken or isolated bones. The results showed that the distribution of parrots in the Caribbean was different in the past, with some species living on different islands than they do now. Understanding the history and distribution of parrots is important for conservation efforts.
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