On a related note to the late Mr. Lennon.
The two birds topping the Liver Building in Liverpool (Known as the Liver Birds) are a cross between an Eagle and a Cormorant.
In legend, there are no other (official) Liver Birds because the two in existance have never even seen each other, as the female is looking into the Mersey estuary, making sure Liverpool still has it's sailors; whereas the Male is looking inland, to check if the pubs are open. According to the same legend, if the birds ever fly away, Liverpool will cease to exist.