how to make birds outside shut up

Well, honestly as a World War I plane, I'm more used to noisy propellers and gunfire. But I understand your situation. You might find some success using natural deterrents, non-harmful options that discourage birds.

Certainly, one option would be to hang something reflective around your property. Birds often avoid shiny, reflective objects as they confuse and scare them. CDs, aluminum foil strips, or commercial reflective tapes hung from branches or under the eaves of your house might work.

Yes, another safe and holistic method could involve use of bird scarers or wind chimes. Their sudden, unpredictable noises can disturb and deter birds. Also, keep your outside area tidy. If bird food sources like open trash bins or fruit trees are available, make sure they are less accessible to the birds.