I get a lot of wildlife in my garden,mainly because most of the floweres and shrubs i plant are scented.My Buddlejas,Catmint,Azaleas etc are always covered in insects...which help attract birds.
As for berry bearing shrubs that are fantastic wildlife attractors...it will be hard to beat a Honeysuckle {i have seven of them},strong scented flowers,sweet nectar and small fruits that wild finches adore.
Lordroth

Try also Amelanchier canadensis, for pretty spring flower, and tasty berries which blackbirds love, and cotoneaster, of which there are many varieties - good for fieldfares, thrushes and blackbirds. Phil J

Pyracantha - the bees love the white blossom, and the birds love the berries.

Members of the daisy and parsley families: nectar for the bees and butterflies, and seeds for the songbirds!

single rather than double flowers are better for insects as they can access the nectar and pollen easier. also planting several plants of similar type closer together helps insects move from area to area. dont forget log piles and things like that to encourage animals to stay in your garden.

Wildlife seems to love much of what we regard as weeds .Nettles , brambles , clover , ivy ...we have a perennial weed hedge woundwort - bees love it.

The ideal wildlife garden is somewhat neglected in appearance and if you truly love it have to put their needs before your own.