The Dim Eyes of Birds Created by Quantum Mechanics

Behind the secret of how birds migrate thousands of kilometers every year without getting lost lies quantum mechanics. Inside the eyes of migratory birds like robins, there's a special protein called 'cryptochrome.' When exposed to light, electrons move within this protein, creating pairs of electrons in a state of 'quantum entanglement.' This subtle quantum state reacts to the Earth's weak magnetic field, generating dark or bright visual patterns in the bird's vision. In essence, birds aren't just looking at a compass; they are literally 'seeing' the direction of the compass with their eyes. The phenomenon of quantum entanglement, once only seen in advanced physics labs, has been utilized by birds in nature for survival for millions of years.