All About Birds↗ | Audubon↗ | eBird↗
with Mallards at Pescadero Marsh, California R7 + 800mm F11 or 800mm F11 + RF1.4x or 800mm F11 + RF2x or 800mm F5.6L or 800mm F5.6L + RF1.4x or 800mm F5.6L + RF2x @ 800mm, ISO 800, 1/800, f/11