I had approx. 15 Redwings in my urban back garden a week or so back. Took them 2/3 days to finish off the berries. (I note from my old records I've had max 30). The good thing was the Redwings bought the most birds I've ever had in my garden trees with a several Chaffinch, several Goldfinch & a few Goldfinch feeding for an hour or more. (Maybe the warmer weather with buds on the Aspen trees?)