Hi Trevsci, it'd be nice to get a better estimate of the amount of birds you saw here considering it is quite a significantly large flock. Your current abundance of 16-100 seems an underestimate anyway, as I counted well over 100 Sulphurs in the first image. We generally encourage a single abundance number even if it is a best estimate, as this information is more useful than a wide range like 16-100. If you could provide a more accurate abundance, even an estimate, that would be much appreciated. Kind regards, Luke