Which bird can identify the colour Blue?
The UFO Bird:
Through his research he found, that birds (next to no exceptions) cannot see the colour blue. This is easy to demonstrate by using a blue light to catch birds at night. A human can see the bird in the blue light but the bird cannot see the human. By approaching the bird with blue light, one can see that the birds become nervous and make movements to run away, but they can not see and are easily caught. The conclusion from the fact that birds can not see blue is that they can not identify any blue subjects properly, they only see the shape. An eagle or falcon-shaped object is memorized as a shadow - but where is the real bird, the real danger? Since the object is seen only as a shadow, the predator must be in the air, casting the shadow on the ground. Since the real bird can not be identified as well, the birds go further away to be out of ...more
birds--well they may know by themselves