Carla Brennan's Blog

Reflections and Photos from The Big Trip and Beyond . .

Babies Are Growing Fast!

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West Cliff Drive, Santa Cruz, CA, May 13 – June 1, 2018

The baby cormorants are exploding in size, seemingly overnight. There are a few small newly hatched chicks but most are nearly the height of their parents. They do not have flight feathers yet but they sure like to exercise their underdeveloped wings. Still covered in fuzzy gray feathers with some white spots they are quickly darkening in color and will soon be sleek. The rock ledge is crowded with families and most birds stand nearby, but not in, their now too small nests.

I also discovered two nesting California Gulls among the blooming iceplants just above the cormorants. I have yet to see any baby gulls. These gull are actually the biggest predator of cormorant eggs and small chicks. Now most chicks are larger than the gulls.

I will include photos from May 13, May 18, May 27 and June 1. You can see the striking difference in the size of the babies. In one photo from May 18 you will see a brown immature Brandt’s cormorant from last years brood. It’s the only juvenile I have seen while visiting this site.

Please do not reproduce any photographs without my permission. Thank you!

 

This gallery contains 22 photos

The Babies are Hatching!

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May 12, 2018, West Cliff Drive, Santa Cruz, CA

The eggs at the Brandt’s Cormorant colony are beginning to hatch! Gray, reptile looking chicks are showing their heads and begging for food. Many of the pairs are still incubating eggs. Both parents spend time on the eggs/ hatchlings. Photos a bit blurry, but you can see the babies.

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This gallery contains 12 photos


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Colonies of Nesting Cormorants

Colonies of Nesting Cormorants
April 2018

I’ve been periodically visiting two nesting colonies of two different species of cormorants: Brandt’s and Pelagic. There is a third species found in our area – the Double-crested Cormorant – but I haven’t seen many around here and I certainly have not seen their nests. (See photos of them from Morro Bay: https://carlabrennan.com/2015/05/24/april-2015-%e2%80%a2-morro-bay-ca/.) Each species has their own preference for nest location and material.

Brandt’s Cormorant. They nest close together on rocky islands or headlands, often on the flat top of a rock face. On my most recent visit, most of the nests were completed with one parent sitting patiently on top as if incubating. When I was there in February, the cormorants were just standing around small disorganized piles of seagrass waiting to steal some from an absent neighbor.

I did catch a pair in the act of mating. (See below.) Another cormorant was vigorously doing it’s mating display. (Head up, tail up, wings up and curled.) So I guess this means that some birds were not yet impregnated. I had hoped to get a glimpse of eggs but either they haven’t been laid yet or were obscured by the sitting bird. There are about 25 nests.

Despite the wild and remote look of this nesting site, it is actually just below a parking lot and scenic lookout. I took the photos from a heavily used sidewalk next to a road and houses.

Brandt’s Cormorants are most easily identified by their bright blue breeding throat patch. They also have a few spindly white feathers on their back and cheeks. (Here they are in February: https://carlabrennan.com/2018/02/06/vitamin-sea-and-butterflies-in-february/)

Pelagic Cormorant. Despite their name, these cormorants aren’t pelagic. (Pelagic means living on the open sea.) They are instead coastal, staying on shore, beaches, and cliffs. Their preferred nesting sites are on vertical cliffs overlooking the ocean. These cliffs have tiny, tiny ledges to build nests on. A very precarious place to bring up babies I would think. The upside to this arrangement is that no cautious predator can get to them. There are not as many Pelagic Cormorants here as I have seen in past years, but a few pairs appeared to be developing nests. My telephoto lens was at its max to get these photos.

Pelagic Cormorants are most easily identified by their red face and the white patches on their lower back. Their seemingly black bodies have a touch of green iridescence.

Video. You might want to watch this Nat Geo video of a cormorant pulling off remora from a whale shark in Mexico!
https://www.youtube.com/watch?v=36-2AfSwRbE

Please do not reproduce any photographs without Carla’s permission.