The biggest problem you face in a propeller aircraft when going through a flock of birds is instant IFR. You don't want to do that on landing.
I had the experience of a flock of Canadian geese taking off as I was committed to takeoff while soloing as a student pilot. It was a spectacular mess, right out of a Friday the 13th Movie (or Indiana Jones).
I had to fly by instruments to climb to a safe altitude then maintain straight and level. Then I had to search the plane for some spare paper towels that I used to create a clear area in the windscreen so that I could see to land (reaching out the side window).
Thus, it is best to stay away from the birds. If they take off, you can abort the landing and climb. If the runway is long enough, you can land long, past the birds.