NO, their heads do not fall off in any season.
I have never heard of pigeon's heads falling off when they die. I don't think they do. Recently a Danish Scientist concluded that this in fact was a myth and that Pigeons heads only fall off in the southern hemisphere.
Pigeons bow and coo as a mating ritual. Each species has a specific bow-coo display. When pigeons fight, they will peck as the area around the head and eyes.
On There Body
Yes, they do lose their leaves in the winter.
Blueberry plants are deciduous, meaning they lose their leaves in the winter.
Yes, plumeria trees are deciduous and typically lose their leaves in winter.
Profiler - 1996 Heads You Lose 3-13 was released on: USA: 13 February 1999
It depends on the type and the severity of the winter.
They actually lose the nutrients
Yes, bougainvillea plants can lose leaves in winter in response to colder temperatures and reduced sunlight.
heads you lose
"Heads I win, tails, you lose". Sucker!