In summer's heat, I'm juicy and sweet, green on the outside, pink to eat.

Hunting is in my nature, A throne of sand brings me relief, I bring my spoils at your doorstep, With a coat of black, white, orange, or cream

I’m most often in the sky, But some can find me in a bottle When luck is on their side

I'm always coming but never arrive, I have a head but never hair, I have a bed but never sleep.

It clicks and slides across my desk And squeaks and claws inside its nest. What's this device and little pest?