Pack of 3 x Squirrel Proof Hanging Wild Bird Feeders - Nut, Seed & Fat Ball Bird Feeder Cage

Will these feeders keep the starlings out? They devour all the food .

Will these stop crows & ravens? and will meal worms stay in the nut or seed feeder or fall through? thanx

I think thee feeders are lovely, but the Birds will not eat from them. I have not changed the food, could it be the colour - what can I do please?

Where are they nanufactured