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'But we also saw other methods of speciation that Darwin hadn’t anticipated involving the rare hybridisation (or interbreeding) of species – including the formation of an entirely new lineage. This remarkable and unexpected process began with the arrival of a single male large cactus finch (Geospiza conirostris) on Daphne from an island in the far south of the archipelago. Though whether the lineage ultimately succeeds or succumbs remains to be seen.'
https://www.theguardian.com/science/article/2024/jul/21/rosemary-grant-peter-grant-charles-darwin-finches-evolutionary-biology-princeton-one-step-sideways-three-steps-forward-memoir
@cyrilpedia I guess on a small scale the lineage those hybrids will survive or not, but we would only see that as speciation over thousands of years. Over recorded history there must have been moments like this, but we can't look at that tiny moment in time from the sparse examples we have.