Short answer to the bird feeding question. YES? They love them, I buy the meal worm cake at Lowe's, they also have a cage feeder that holds the cake. The ONLY problem I see with meal worms is the SQUIRRELS love them too. I have 4 squirrels and they stayed full of the birds meal worms until I found a way to keep them off the cage. I have 16 different species of birds and the only one I have NOT seen on the meal worms is the Mourning Dove.

In looking at your picture (hard to tell) but I see two male Cardinals, one female Cardinal, what appears to be the back of a BlueJay, and the two smaller birds on the feeder appear to be Pine Siskens. Pine Siskens are marked somewhat like Goldfinches, but instead of a very bright Yellow plumage, theirs is a drab olive green. Their wings have the black stripping like the Goldfinch. --Bill