Put bright clothing on them, colorful the better & you must pay attention like a hawk! Maybe even put reflective tape over a vest or something? It confuses the predatory birds...our Yorkies do not look like widdle bunnies.
I think it was Mandy's mom, Teri....she always put the orange pumpkin Halloween costume on Mandy the Yorkie when going outside LOL.
Or invest in one of these...coyote & hawk deterrent!
https://www.coyotevest.com/