Was there a special significance in God's choice of ravens for supply of provisions to prophet Elijah?

We read in 1 King 17:2-6: > Then the word of the Lord came to Elijah: “Leave here, turn eastward and hide in the Kerith Ravine, east of the Jordan. You will drink from the brook, and I have directed the ravens to supply you with food there.” So he did what the Lord had told him. He went to the Kerith Ravine, east of the Jordan, and stayed there. The ravens brought him bread and meat in the morning and bread and meat in the evening, and he drank from the brook. Raven as such, is not treated as a clean bird , because of its diet of carrion. But the Lord's decision to delegate it for supply of provisions to the prophet, should have had a deeper significance. My question therefore is: Was there a special significance in God's choice of ravens for supply of provisions to prophet Elijah? Inputs from any denomination are welcome.