How to avoid geese at night  

1. Are Canadian or Snow Geese known to be migrating at your requisite altitude? Don't fly. 

2. Read the DoT/FAA 1990-2022 Wildlife Strike report. 

3. Fly between 2,500 & 3,500' OUTSIDE of known migratory bird pattern. 

4. NVGs do not turn night into day. They're limited to 40° FOV and are dependent on operator knowledge, skill, technique & tenacit. They're not a replacement for daytime 20/20 vision. They are an aide. And we are not flying in combat. 

5. Don't fly below geese. You'll be surprised in a bad way. 

6. if you fly above geese, make sure you have basic cloud clearance above you and a SAFE clearance beteeen you and the geese BELOW you. 

7. After you consider the above, and if you buy off on the logic, you'll probably determine that fewer night flights are safely possible when you have ceilings below 3500', or you will press on and depend on luck or God's grace to separate you from geese.  

The choice is yours.