Did you ever wonder how a mother bird that flies out of its forest nest to find food can then find its nest again in the dense forest? Especially from above?

There are a group of cells within the bird's brain that are called ‘GPS neurons’. These neurons respond to the direction and strength of the Earth’s magnetic field and enable the birds to navigate. 

Every neuron had its own characteristic response to the magnetic field, with each giving a sort of 3-D compass reading along the familiar north-south directions as well as pointing directly upward or downward. In life, this helps the bird determine not only its heading just as a compass does, but would also reveal its approximate position.

A bird can fly hundreds of miles and return to its nest. And seed-catching birds store food in hundreds or even thousands of sites, and retrieve it hours or even months later. 

Up to a certain point, the GPS is useful, and when honing in on a more specific location, birds rely upon additional orientation cues, such as vision and smell.

This enables a bird to find its nest in a thick forest full of trees.

Praise Hashem, who gives each creature exactly what it needs to survive~