Couldn’t help but think of what’s to come when reading this:
Most people are aware of the fact that crows are very smart birds. They can use tools, plan ahead, remember things, and even communicate these things among themselves.
To communicate with other devices, these machines use light signals. The crows embed pieces of reflective material in special communication stalks, and the insects aim these to reflect light at another nest, encoding data as a sequence of quick flashes. This means that only nests that have an unbroken visual connection can communicate.