Bald eagles will share the same habitat with them, being larger they will often force an osprey to drop it's fish and take it for it's own meal. Osprey have a black stripe extending from their eye to their back, and it's one of the ways you can distinguish it from the bald eagle.
They have a staggered nesting season, which means in times of poverty the older bigger offspring eat while the smaller ones will starve.
My son really liked what happened in this video.