I planted a mixed hedge using about 100 plants around 20 years ago. There is plenty of bird activity around now, where before it was a bit limited.
Small leaf lime
Blackthorn
Hazel
Dog rose
Guelder rose
Hornbeam
Field maple
Silver birch
Goat willow
Crab apple
Hawthorn
I know there are different varieties of some of them, but lets not get complicated.
Hazel will easily get to 10' before it produces nuts and 15' is needed for poles. There's also pea sticks. If you have 10 plants, you could start getting something from one in 5 years, and then 1 a year after that.
Dog rose, a year or two before any hips, but it needs a lot longer to produce quantities. I find the roadside hedge rows better for this, as you need a lot of hedge for enough hips. Handy for itching powder.
Field maple, firewood, kindling, minced bits for compost.
Silver birch, grown into trees, anything up to 35' now. Have had birch sap from them, though it's just for a novelty. Useful sticks for uses similar to field maple.
Crabapple, haven't seen any fruit yet.
Hawthorn, amazing smell from the blossom, haven't done anything with the hips.
I read in one of Geoff Hamilton's "Cottage Gardens" describing a cottage hedge of quickthorn. The hedge was cut down six years running after planting to make a dense hedge, so patience is useful.
Geoff also mentions you need 3' of width for the hedge, mine is not as thin as that
![ohmy :ohmy:](https://chat.allotment-garden.org/Smileys/green/ohmy.gif)
I doubt a hedge 3' high will produce much for eating.