You can put up fencing around them. Such as a metal cage. Deer fencing works well too if you wanted to drape or build a tent around them with it. Both help with chickens, deer, squirrels, rabbits, and so forth.
Genetic engineering based on recombination was pioneered in 1973 by American biochemists Stanley N. Cohen and Herbert W. Boyer, who were among the first to cut DNA into fragments, rejoin different fragments, and insert the new genes into E. coli bacteria, which then reproduced.
