TIL that copulation among noisy miners (an Australian bird) is a frenzied communal event, incubation is by the female only and up to twenty male helpers take care of the nestlings and fledglings

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Noisy miner - Wikipedia

https://en.m.wikipedia.org/wiki/Noisy_miner

Noisy miner - Wikipedia

So the title info is cribbed from the Wikipedia link which I looked into after noticing a few fledglings in a park being fed by half a dozen mature birds. Very communal creatures.