Complex sentence: The food is very similar to the Fish Crow taking stranded fish, shellfish, crabs, mussels also searches refuse tips for suitable food items and has been seen to take mussels into the air and drop them onto hard surfaces to break them open.
Split into simpler sentences: The food is very similar to the Fish Crow; it takes stranded fish, shellfish, crabs and mussels, and also searches refuse tips for suitable food items. It has been seen to take mussels into the air and drop them onto hard surfaces to break them open.