Documentation of Yellow-crowned Night-Heron

Observer Information

Reporter:  Peter Gent  55 S. 35th St.,   BOULDER, CO  80305-5524
Other Observers:  Leslie Sutton, Dan Zolmek, Kevin Rutherford, Thomas Heinrich.

Species, Date, Time and Location Information

Species:  Yellow-crowned Night-Heron
First Date/Time:  10/30/2022 8:45:00 AM
Last Date/Time:  10/31/2022 10:30:00 AM
Duration (total time in view):  2 hours
County:  Boulder
Specific Location:  Pella Crossing Park
Number:  1
Age:  Immature
Sex:  Unknown
Plumage:  Transitional


Shore of east pond at Pella Crossing.

Viewing Conditions

Optics:  10x binoculars, 30-60x telescope.
Distance:  80 yards.
Light:  Bright sun both days.

Description of the Bird

Mostly dark brown quite large bird that had a heron like body, but with a srcunched down look with no neck appearing. The bill was all black, quite short and thick. Eye color was reddish. The back was brown with relatively few white spots along the edge of the wing and the chest was also brown with only subtle streaks. The legs were a dull green.

Similar Species Discussion

Juvenile Black-crowned Night-Heron was eliminated because of the all dark thick bill, no obvious chest streaks, and few white spots on the wings.

Resources Used

Sibley and National Geographic Field Guides.

Previous Experience

I see Black-crowned Night-Herons frequently, but have seen about 6 Yellow-crowned Night-Herons in Colorado, including a juvenile many years ago at Belmar Park in Lakewood.


Notes made AFTER observation

Materials Available

Photographer: Leslie Sutton

Photos |


Date Documentation Submitted

11/4/2022 8:33:00 AM
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Location Map

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