I have 8 fruit trees .two pears apples plum cherry . Everyone is very healthy. They are approx 6/8 years old. This year they were all covered in tons of blossom but only a few ( about 10) on each tree converted to fruit. I have fed them and watered etc. We do have pigeons. Please help .
There can be several reasons for non bearing fruit trees. Pollination issues, environmental, pests, and disease.
You can start with a soil test, do determine if soil amendments are needed.
These articles will help you.