Birds wouldn't use a decimal system for counting, but rather count in ternary, if they learned math, amirite?

Not all birds have three toes.

There are 10 types of people in this world.

Those that understand hexadecimal, and F the rest

Hang on - do you think people have ten fingers on each hand Alabama boy?

They would use the octal (base 8) system, because they have 4 digits on each foot.