All images are from this morning at Huntington Beach State Park in South Carolina, my local park! Used the Z9 with firmware 4.0 (really nice update) and 800pf.

Spoonbill up close, no not cropped at all
NIKON Z 9 NIKKOR Z 800mm f/6.3 VR S lens 800mm f/6.3 1/2000s 2800 ISO -0.3 EV

Juvenile Little Blue Heron
NIKON Z 9 NIKKOR Z 800mm f/6.3 VR S lens 800mm f/6.3 1/2000s 4000 ISO 0.0 EV

Little Blue Heron, Adult
NIKON Z 9 NIKKOR Z 800mm f/6.3 VR S lens 800mm f/6.3 1/2000s 1600 ISO -0.3 EV

Red-winged Blackbird
NIKON Z 9 NIKKOR Z 800mm f/6.3 VR S lens 800mm f/6.3 1/2000s 800 ISO -0.7 EV

Spoonbill with clam clamped down on it's foot. It will let go eventuiually.
NIKON Z 9 NIKKOR Z 800mm f/6.3 VR S lens 800mm f/6.3 1/2000s 1100 ISO -0.3 EV

Great Blue Heron, up close! Again this is not a crop it was close!
NIKON Z 9 NIKKOR Z 800mm f/6.3 VR S lens 800mm f/6.3 1/2000s 2800 ISO 0.0 EV