Question

how do small or weak animals protect themselves from bigger or stronger animals and birds​

Answer 1

By getting hid in the small bushes or grasses.

Answer 2

every animal and birds live in different enveronment and every different birds and animals have different features and different skills eg some fly fast and some runs fast , some adjust in little space and some takes much place so in short everyone knows by nature and by experence hw to protect urself....