do they have a relationship with humans?
Yes, formerly trapped for food in England.
Ruff (bird)
Ruffs were formerly trapped for food in England in large numbers; on one occasion, 2,400 were served at Archbishop Neville's enthronement banquet in 1465. 
what is a ruff? Medium-sized wading bird. where is it found? Marshes and wet meadows across northern Eurasia. what does it eat? Beetles, flies, crustaceans, spiders, etc.
wiki:4725879
Ruff (bird) [SEP] Relationship with humans
Ruffs were formerly trapped for food in England in large numbers; on one occasion, 2,400 were served at Archbishop Neville's enthronement banquet in 1465. The birds were netted while lekking, sometimes being fattened with bread, milk and seed in holding pens before preparation for the table. ...if expedition is required, sugar is added, which will make them in a fortnight's time a lump of fat: they then sell for two Shillings or half-a-crown a piece… The method of killing them is by cutting off their head with a pair of scissars, the quantity of blood that issues is very great, considering the size of the bird.