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Animalblog, Black Crowned Night Heron

Black-crowned Night Heron (nycticorax nicticorax)
(1 of 8) (388565 views)

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At the sanctuary, there is a group of palm trees next to the large pond that provides prime nesting spots. It is fenced off to ensure the breeding birds are not disturbed.

In late March, this was one of many night herons nesting amongst the snowy and great egrets. Its usually yellow legs are pink because it's breeding season.


(2007) Palo Alto Bird Sanctuary   •  Photo Posted May 24, 2007   •  © 2007 Terry Costales Creative Commons Attribution-NonCommercial License
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Juvenile Black-crowned Night Heron
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Taken late March, this bird is probably a year or two old and has the yellow legs you see on both juveniles and non breeding adults. They get their full adult plumage in the third year.

If you look at this shot and the thumbnail below it, you can see they are roughly the same size and shape. Nice of them to pose for their comparison shots.


(2007) Palo Alto Bird Sancutary   •  Photo Posted May 25, 2007   •  © 2007 Terry Costales Creative Commons Attribution-NonCommercial License
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Black-crowned Night Heron
(3 of 8) (382787 views)

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The bird on the left is a young adult who won't achieve the look of the mature bird on its right for another year.
(2007) Delta waters near Oakley, California   •  Photo Posted Monday, October 15, 2007   •  © 2007 Terry Costales Creative Commons Attribution-NonCommercial License
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Black-crowned Night Heron (Nycticorax nycticorax)
(4 of 8) (382783 views)

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Seeing a bright red eye on a bird, to me, is quite startling. Although the heron external link appears to be standing one-legged, the other leg is actually stretched out in front, grasping another branch.
(2007) Delta waters near Oakley, California   •  Photo Posted Saturday, October 20, 2007   •  © 2007 Terry Costales Creative Commons Attribution-NonCommercial License
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Black Crowned Night Heron
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It's breeding season again for the Night Heronsinternal link and Snowy Egrets.internal link Here is a Heron settling a property dispute with his Egret neighbor.
(2008) Baylands Preserve, Palo Alto, California   •  Photo Posted Thursday, May 29, 2008   •  © 2008 Terry Costales Creative Commons Attribution-NonCommercial License
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Black-Crowned Night Heron (Nycticorax nycticorax)
(6 of 8) (278895 views)

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A large fledgling appears mesmerized by the camera. external link
(2008) Baylands Preserve, Palo Alto, California   •  Photo Posted Sunday, June 15, 2008   •  © 2008 Terry Costales Creative Commons Attribution-NonCommercial License
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Black-crowned Night Heron (Nycticorax nycticorax)
(7 of 8) (336833 views)

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An adult night heron in full breeding plumage showing off its pink legs which are yellow the rest of the year. external link


Palo Alto, California   •  (Photo posted Friday 29 January, 2010)   •  (Photo taken 12:53:23 Monday, 19 May, 2008)   •  © 2010 Terry Costales Creative Commons Attribution-NonCommercial License #Night_Heron
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Black-crowned Night Heron
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This bedraggled juvenile black-crowned night heron was perched on the dock near the boat we were going to use. I hoped it wasn't a harbinger of how our trip would turn out.


Oxnard, California   •  (Photo posted Monday 8 November, 2010)   •  (Photo taken 09:21:08 Friday 8 October, 2010)   •  © 2010 Terry Costales Creative Commons Attribution-NonCommercial License
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