We had them in the front yard at first- and whether they did any business there I really don't know because I wasn't watching. About a week ago I moved them to the back- where I can see them from the living room window. The bird table gets a lot of visitors, but I never saw anyone at the tulips until today- when I caught a great tit perching on the lip of one of them.
Here is a complete list of the species who visit our back yard:
Robin
Blackbird
Sparrow
Collared dove
Wood pigeon
Starling
Great tit