Hi, you can read previous topics o this question, e.g. https://forum.inaturalist.org/t/observations-of-groups-of-animals/19598, observation on iNat is about one individual, so f you want you can add them all separately, but it’s not a thing many people do and you really don’t have to (unless you have separate photos of each bird, where you can see differences, and not 1 photo of the flock), you can also do anything in between, anything you like really.
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