In this article I’ll be going over 7 big birds that can be found across South Dakota so continue reading if you want a more detailed look at each of these larger birds below.

• American White Pelican
• Snowy Owl
• Great Egret
• Snowy Egret
• Great Horned Owl
• Bald Eagle
• Golden Eagle

7 Big Birds In South Dakota

1. American White Pelican (Pelecanus Erythrorhynchos)

• Size: 130 – 160cm
• Weight: 6 – 6.5kg
• Wingspan: 260 – 290cm

American white pelicans will use the majority of South Dakota when migrating but can also be found in the northeast and southwest regions of the state when breeding. 

These pelicans can be recognised by their mostly white plumage and extremely large bills. Females look vey similar to the males.

You’ll often spot these birds around lakes and rivers.

As for what they eat, it includes mostly fish of the rough kind that humans don’t typically capture, smaller amphibians and crayfish.

Wild American white pelicans are known to live for around 16 year in the wild whilst captive ones are known to be around the 30 – 35 year range.

2. Snowy Owl
(Bubo Scandiacus)

• Size: 52 – 71cm
• Weight: 1.1 – 2kg
• Wingspan: 125 – 164cm

Snowy owls can be found all throughout South Dakota in their non-breeding fall and winter months. 

These owls are recognised by their mostly white plumage with brown dots throughout the body. Females on the other hand are generally less white than the males as the brown spots encompass more of their body.

Snowy owls tend to spend their time within arctic tundra or open grasslands and fields, whilst avoiding forested areas. 

As for what they eat, it includes lemmings and a variety of small mammals. Nevertheless, they will still occasionally eat larger mammals like like hares, rats, rabbits, etc.

Snowy owls have been observed to live for around 28 years in captivity and between 10+ years in the wild.

3. Great Egret (Ardea Alba)

• Size: 80 – 100cm
• Weight: 0.7 – 1.5kg
• Wingspan: 130 – 170cm

You’ll be able to spot great egrets in eastern and central South Dakota when migrating.

Great egrets are recognised by their extremely long necks, yellow bill, long black legs and mostly white plumage. Both males and females look very similar with the males being generally larger than the females.

Great egrets spend the majority of their time within marshes, ponds, shores and mud flats.

As for what they eat, it includes primarily consume fish along with crustaceans, amphibians, and small mammals. They will also forage around open areas.

Great egrets tend to live for around 15 years in the wild and around 22 years in captivity.

4. Snowy Egret (Egretta Thula)

• Size: 56 – 66cm
• Weight: 350 – 390 grams
• Wingspan: 95 – 105cm

You can spot snowy egrets in southwest South Dakota when migrating along with a number of vagrant ones throughout the state.

Snowy egrets as their name would suggest are snow white birds with a long neck, black beak, black legs whilst also having a relatively large frame. Besides their sexual organs the only differentiating factors between males and females are that the males are slightly larger.

You’ll find these egrets by mudflats, beaches, and wetlands, but you can also see them forage in wet agricultural fields and along the edges of rivers and lakes. 

Snowy egrets eat a variety of foods from fish, insects, crustaceans which includes crabs, crayfish, frogs, snakes, snails, worms, lizards, rodents and more.

These egrets are known to live for around 5 – 6 years in the wild and upwards of 16 years in captivity.

5. Great Horned Owl (Bubo Vrginianus)

• Size: 57 – 63cm
• Weight: 1.4 – 1.5kg
• Wingspan: 1.35 – 1.5m

Great horned owls can be found all across South Dakota on a year round basis.

These large horned owls are recognised by their brown/gray plumage with their defining feature being the tuft of feather on the top of their head resembling a horn or ear like feature. Male and female great horned owls look relatively the same with the females slightly larger in size.

At night these birds will perch on a branch or a tall building to look around for prey and once the desired prey has been found they will fly towards it with folded wings, grab the prey with their talons piercing through their body and in most cases killing  them immediately.

As for what these birds eat it includes smaller prey like rodents, frogs or scorpions. Even other larger predators like geese, ducks, hawks, and smaller owls can be eaten by these carnivorous birds.

Great horned owls are most commonly found in deserts, wetlands, forests, grasslands, backyards, cities and they can also be found in semi-open habitats between the Arctic and the tropics.

As for a great horned owls lifespan, it can be anywhere from 15 -25 years.

6. Bald Eagle (Haliaeetus Leucocephalus)

• Size: 90 – 108cm
• Weight: 3 – 6.3kg
• Wingspan: 180 – 250cm

Bald eagles are fall and winter non-breeding residents in the western and central regions of South Dakota.

A bald eagle’s plumage consists of dark brown around its wing and body, with white feathers on its tail and head along with the trademark yellow beak and feet. Both male and female bald eagles look relatively the same.

As for where you can find these eagles, it will often be around lakes and reservoirs with lots of fish and surrounding forests. You’ll often find them around unfrozen lakes and hunting along coastlines, reservoirs, and rivers during the winter months

These eagles are birds of prey meaning they hunt other birds, medium sized mammals like rabbits, hares, other animals like reptiles, fish and even eat carrion when their options are limited. Sometimes bald eagles are recognised as fish eagles as their diet consists of fish and as meat is the only thing they eat these eagles would ultimately be regarded as carnivores too.

Bald eagles can live for around 20 years in the wild.

7. Golden Eagle (Aquila Chrysaetos)

• Size: 70 – 82cm
• Weight: 3.7 – 5.3kg
• Wingspan: 190 – 212cm

Golden eagles can be found in the western region of South Dakota on a year round basis and in the remainder of the state in the the fall and winter months when they aren’t breeding.

These eagles are recognised by their mostly light brown and dark brown plumage, yellow feet and black downwards pointing beak. Females once again are the larger of the 2 birds where males are roughly 33% smaller in size.

These eagles spend the majority of their time within open moorlands and mountains within the likes of Scotland, and many areas within north America

Golden eagles do eat carrion but, it isn’t their first choice of food when hunting for prey. If they do find a dead carcass they will eat it, with their general food choices consisting of smaller mammals, birds and sometimes larger prey.

These eagles are known to live for around 14 years in the wild whilst captive are even able stay alive till their early 30’s with the longest observed at 32 years old.