This Sparrow is getting a huge telling off from a Blackbird. It’s all about who is boss, space and food. The Sparrows are quicker than the larger birds, but when push comes to shove, the Blackbird is larger and bigger.
I have set up some bird feeders by just using old plastic milk bottles. The seed or crumbs or discarded bread goes in these and also they pick out fruit. The Black birds prefer the fruit, but they also eat slugs and snails.
I’ve seen a Sparrow get a Cicada in mid air, never underestimate a Sparrow!