It’s really difficult to determine what your pest might be without seeing images. The link below talks about strawberries in Minnesota gardens and contains a section on pests. There are images of common pests, and you may find the one that is harming your crops there. If this isn’t helpful, send us images of any pests you find this summer on your peas and strawberries, and we may then be able to identify them. I’m also attaching an article that discusses pest management for strawberries and how to prevent these critters from damaging your peas and strawberries. 

https://extension.umn.edu/fruit/growing-strawberries-home-garden#pest-management-schedule-for-strawberries-989060

https://conservancy.umn.edu/bitstream/handle/11299/198101/Strawberry%20Home%20IPM.pdf?sequence=1&isAllowed=y