SIB “Bird of the Week” – Anhinga vs Double-crested Cormorant

Anhinga                                                    Double-crested Cormorant 
Anhinga anhinga                                                   Phalacrocorax auritus
L: 35″   WS: 45″  Wt: 43.3 oz                    L: 33″   WS: 52″   WT: 59.2 oz
When walking the Palmetto Lake trail, you often see a large, black bird perched on the Osprey platform or the alligator ramp with it’s wings spread. Most times, it is a Double-crested Cormorant, which are very common birds for Seabrook Island. But sometimes, you are lucky enough to see an Anhinga.
Male Anhinga drying wings - E Konrad
Male Anhinga drying wings – E Konrad

Anhingas roost in trees over water or on platforms, and on Seabrook, they are often solitary. They are about 35″ long and have a 45″ wing span. They are sometimes called the “snake bird” since they swim completely submerged with only their head exposed. They spear fish with their very pointed, long, thin and straight bill. They have a long, fan-shaped tail when perched, long pointed wings and a long neck. The most striking part about them is the whitish-silvery upperwing pattern which makes them look like they are wearing a snazzy jacket! If you see this pattern on the back of a large dark bird, it’s an Anhinga. The females have a velvety-buff upper body, as do the juveniles (until the 3rd year). The Anhinga has a striking blue-green eye ring in breeding plumage. Anhingas nest in small colonies, often with herons or egrets. They eat fish, frogs and often newly hatched alligators.

Double-crested Cormorants drying their wings - E Konrad
Double-crested Cormorants drying their wings – E Konrad

Double-crested Cormorant are nearly the same size, 33″ long  with a 52″ wing span. They are very common birds on Seabrook, often perched on the lake platforms or in large groups swimming in the inlet at North Beach. They may form large flocks and when we see them in flight, often flying in a large “V” formation. Their bills are orange, curved, hooked shaped, and thicker than an Anhinga. They use them to scoop and grasp their prey. Juveniles can also have buffy breasted color variations. Cormorants have a striking crystal like blue eye and a yellow-orange face patch. Cormorants nest in large colonies and are fish eaters.

Both birds do not have oil glands so their feathers are not water repellent. This lets them move more easily underwater for foraging.  That’s also why you often see them drying their non-waterproof wings spread open, when perched. Both birds make low nasal frog-like grunts. So a quick tip is this:

  • Slender, long-necked with a straight, pointy bill, wearing a snazzy jacket = Anhinga.
  • Shorter necked , hooked, curved and orange bill, wearing basic black = Cormorant!

If you would like to learn more about these birds visit:

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This blog post is part of a series SIB will publish on a regular basis to feature birds seen in the area, both migratory and permanent residents.  When possible we will use photographs taken by our members.    Please let us know if you have any special requests of birds you would like to learn more about.

Beyond Our Backyard-Edisto Nature Trail

Beyond Our Backyard – Edisto Nature Trail 

Saturday, April 30, 2022 8:00am-12:00pm
Location: 17038 Ace Basin Pkwy
Carpool: Meet at SI Real Estate Office to Car Pool at 7:00am, drive is approximately 50 minutes to the nature trail’s parking lot
Cost: Free for SIB Member; $5 Guest Fee

Come join us for spring migration, Beyond Our Backyard, at the Edisto Nature Trail. This park, within the ACE Basin on Highway 17, is both a migrant hot spot and a known nesting area for a number of sought after bird species. The park, adjacent to the Edisto River, has a variety of habitats along its one point five (1.5) mile looped trail. As you walk the park in search of its birdlife you will move through a pine and maritime forest habit into, adjacent the Edisto River, a cypress-tupelo swamp. In prior years, because of this varied habit, we have encountered a vast array of wildlife and plant life inside the park boundaries.

Some of the bird species we will endeavor see, and have encountered in prior years, includes such Warbler Species as Prothonotary, Worm-Eating, Black and White, Swainson’s, Kentucky, Hooded, Black Throated Blue, Yellow-Throated, and Northern Parula. Other possible bird species include, but are not limited to, Veery, Scarlet Tanager, Blackburnian Warbler, Rose-Breasted Grosbeak, Blackpoll Warbler, Prairie Warbler, Blue-Winged Warbler, Warbling Vireos, and a variety of raptors.

This nature trail has a number of board walk cross overs to assist in traversing potentially wet areas. Appropriate foot ware is recommended, even during dry spells, so that all participants are able to maximize the enjoyment of their experience. Participants should also consider these other items to maximize the comfort and enjoyment: binoculars, bug spray, sunscreen, hats, layered clothing to adjust to the mornings weather, field guides if print is your preference, eyeglass – lens cleaner, water, snacks, camera, and a pack or shoulder bag for your needs.

If you are not a member of Seabrook Island Birders you may do so by following this link : Or by going to our web page under the Contact tab and clicking on Join SIB.

Please complete the form below to REGISTER prior to April 27th, 2022. You will receive a conformation letter the day prior to the event.

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