They don’t really say these are immature, just non-breeding plumage.
Horned Grebe
Country United States
State Illinois
Location Independence Grove
Gender Unknown
Age Adult
Activity In or By Water
- Created Timestamp04/13/2023 14:04:11
- CameraDSC-RX10M4
- Aperture4
- Focal Length214.72
- Iso100
- Shutter Speed1/800
- Orientation1