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kaiwen1 | 1 year ago

Upvote for the mockingbird. One fellow has for years perched himself in tree near the sidewalk tables at my favorite restaurant. His songs are as good as the food.

> only three species of birds survived the Chicxulub asteroid impact

I think it was three clades that survived, not individual species.

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moultano|1 year ago

Yes, it's possible that some of the diversification within those clades happened before the impact, but the start of the radiation is so close to the impact that I think it's unlikely that it happened earlier. It would be too much of a coincidence, and the error bars for the molecular clocks almost always include the impact.