Which birds fly in V formation?

I grew up in Michigan and always saw Canadian Geese flying in the V formation. Always a beautiful sight.

Also ducks

We see wonderful skeins of geese flying across East Anglia, UK, during late Autumn and early Winter. Sometimes there are fifty or more birds flying together.

there's quite a number of bird species around the world that fly in a V formation

I remember the flying 🦆