One of the tenets of my life has long been that if something is physically possible, someone somewhere at some time will do it, however ridiculous, harmful, absurd, evil or just plain pointless. Usually, weird stuff has some kind of sexual connotation but this one is just plain weird.
Apparently someone has been going around putting Christmas decorations on birds! It sounds kind of funny in a loopy sort of way, but it is stressing out the birds and actually killing them, so it's not really that funny, more like a bizarre kind of torture. The SPCA has rung the alarm on this and is begging the perpetrator to please stop.
I don't know if this is some kind of insanity. Maybe the person doing it doesn't realise the harm it is causing. It might seem funny, or an innocuous joke, like dressing up in a clown outfit. Maybe it is an unusually imaginative kid who has graduated from pulling the legs off spiders. Who knows? To me it is simply unbelievable.