3 ms·

Are the birds imitating sounds they heard in the forest? Mimicry is a powerful thing

• dylan604 6y ago
  I went deeper down the rabbit hole, and it is their mating call / territorial signal. The drumming sound is actually created from a vacuum effect caused by the particular movement of their wings. https://www.youtube.com/watch?v=vERkh23mp64 https://www.youtube.com/watch?v=vERkh23mp64
• tejtm 6y ago
  It's a mating call that predates combustion engines most likely by millennia(s)
  • dylan604 6y ago
    I wonder how long Poly has wanted a cracker
    • tejtm 6y ago
      Two billion years give or take