MothMan? Huge Bat? Jersey Devil?

Hello Viewers, Please help me about my cousins experience!

I believe him, but I am not sure what he saw. He described it with brown eyes brown body and extremely huge wings. He said on Facebook, "Me and my brother a and dad were coming back home from Casey's on our bikes and in the corner of my eye, there was a giant batlike thing flying really fast! I told my dad but he said I was just scared. But then later he came back and said he saw something teally big fly over his head."

I'm afraid for him. It was one a clock. It was in Minnesota. Please help me! I need answer for what this creature would be