CASPIAN TERNS, COMMON TERNS & RING-BILLED GULLS, ROTARY SUNRISE LAKE PARK, WHITBY, ONTARIO, 7/9/2023

   The Common Terns are the smaller birds with black crown and orange-red bills.  The Caspian Terns are the large birds with black crowns and black legs.  The other large birds with ringed bills are Ring-billed Gulls.