Not only do hens have a strict pecking order and a mistrust of newbies, but ducks and geese , too, hate any sort of change and that change doesn't always need to occur within their own species.
And so, ducks will chase and challenge new hens and visa versa. Geese will chase and honk at anything new even if the victim in question is a dropped piece of paper. And old established cockerels will chase down and batter any new male with a cock of his own and an attitude to match.
It's West Side Story , with webbed feet and fat bills instead of flick knives and a warbling Natalie Wood.
And the air is filled with loud quacking , shrill squawking and hysterical to-nig and fro-nig
Only Bingley is calm
I fed him his treat of dog food this morning and he calmly ate the lot
As all around him descended into chaos