This just reminded me.
We'd only been living in Spain about 2 weeks and I'd bought a chicken from Mercadona as you do.
Unwrapped the chicken and its freaking neck plopped out from whence it had been tucked in, swung down and touched me on the hand.
I got such a fright I shrieked, threw the chicken right up into the air and it dive bombed with a thunk onto the floor.
I peeped into the lounge..none of my lot had heard a thing..put my rubber gloves on, picked the chicken up, rinsed it, dried it and bunged it in the oven.
The family were halfway through their dinner before they noticed I was only having a cheese sandwich!