My mystery bird has been finally identified!

I thought I had a picture of this from the back but I can’t find it, so apparently they are young sterlings, which is what this is. The beaks will turn yellow and the feathers become different shades.
My mystery bird has been finally identified!

I thought I had a picture of this from the back but I can’t find it, so apparently they are young sterlings, which is what this is. The beaks will turn yellow and the feathers become different shades.