Did you know that most of the common birds in Hawai’i are introduced by humans and now are invasive pests. Sure, they might look fabulous and colorful. Yes, they have melodious bird songs. But their main activity is killing off the native Hawaiian birds by competing for food and living space. Find out the sordid details and discover the native birds that hung on for dear life and can be easily observed! #Hawaii #birding #OurCarpeDiem #InvasiveSpecies-

Invasive Nuisances! The Best Beginner’s Guide to Birds of Hawai’i

So you are on vacation and see all these amazing birds in Hawai’i. Not surprising, you might have no idea what they are. No worries! I will introduce you to some of the Hawaiian birds that you might meet on your first visit. While researching this article I discovered that most of them are invasive species and hurt the truly Hawaiian bird population!

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Red-Crested Cardinal, a common Hawaii bird
Red-Crested Cardinal

Close Encounters of the Bird Kind

One aspect I always enjoy when birding in a different place is discovering new-to-me birds. During our first day on Oahu, we hit a double whammy on our first walk, right in Waikiki. Our first two birds were a bulbul and a flittering flock of white-eyes! Back then, I was amazed at these Hawaiian birds, but later I found out that most of the birds we saw actually were pests, replacing the native birds of Hawai’i.

Red-whiskered Bulbul: An Invasive Bully

This is a red-whiskered bulbul. Before I came here I didn’t even know a bulbul existed. It was quite loud and vocal, I heard it before I saw it. Nice colors. It made me feel that yes, we arrived in the tropics! Well, until I came home and found the story behind the bird.

Hawaii birds: a red-whiskered bulbul on a wire in Honolulu.
Red-whiskered Bulbul

Why is this Bulbul a Pest?

Who would have known that this innocent looking bird competes with local birds for food and space. Recklessly, it spreads the seeds of invasive plant, so it is like the gift that keeps on giving. It likes to bully other birds, and jealously and aggressively protects whatever food he eats.

Where do they Belong?

The Red-whiskered bulbul is native to India and Burma. They were brought to Hawaii as pets. Wild populations are thought to have resulted from pets possibly escaping or being illegally released in the 1960’s.

Birding in Hawaii: A red-whiskered bulbul eating a grasshopper

Only on Oahu?

For now it seems that only Oahu has trouble with them. These birds are present in large numbers island-wide, although somewhat less numerous than red-vented bulbuls (which actually made it to the list of the 100 of the World’s most invasive alien species!)

Japanese White-Eyes: the Best Laid Plans of Mice and Men…

While I was still savoring my bulbul, Tom found a spectacle of cute and talkative little birds at a dumpster area. These turned out to be Japanese white-eyes, the most common bird in Hawaii. In 1929, they were popular to use for insect control on sugar plantations. At first it seemed like a good idea, until these white-eyes start outcompeting the native bird population.

Japanese white eye, the most common bird in Hawai'i
Japanese white-eye, also called mejiro

House Sparrows: Making Themselves at Home

Originally, the house sparrow came from Eurasia. During the early 1850s, New York City imported the house sparrow for pest control. While that worked fine, the sparrows liked America so much that they made themselves right at home. They spread all across North America to become a pest, eating butterflies, and destroying flowers.

A house sparrow, one of the first birds we saw in Hawai'i

When they were introduced to Hawai’i, they competed for food with native bird species and displaced them for nesting cavities. Clearly, not a very welcome house guest!

Hawaiian Introduced Birds on Oahu

While researching this article, I realized more and move how humans transported many bird species to the island, many of them posing a threat to the endemic (local) bird population.

The Red-Crested Cardinal: Belongs in South America

When we went hiking at Diamond Head, I met my new favorite bird, the red-crested Cardinal. Flaming and brilliantly red, their crest is visible from far away. We loved encountering it a few times on this hike. As a common scavenger, it was happily eating food scraps left behind by hikers.

Red-crested cardinal. A common bird on Oahu, Hawai'i
Red-crested Cardinal

Although I couldn’t find any mention of this cardinal being invasive, it still is a bird which doesn’t belong in Hawai’i. Similar to the Northern Cardinal, “we, the people” imported it to Hawai’i in 1929.

The Northern Cardinal: Red = Danger!

Of course you might wonder why we introduced all these birds to Hawai’i. Well, it turns out that, according to the locals, Hawai’i did not have enough song bird variety.

Northern Cardinal, yet another bird that was introduced to Hawai'i.
Northern Cardinal

So they started a bird society “Hui Manu” (literally “bird meeting”) for the sole purpose of introducing new “worthy” birds to the islands.

Hui Manu, a bird society founded in 1930 to acclimatize exotic birds, introduces 1,000 cardinals to Oahu. “The brilliantly red cardinal seems a particularly fortunate selection, as few birds seem to fit into the tropic scene more effectively than this vividly colored bird.”

Honolulu magazine

In addition to Hui Manu, the Hilo Chamber of Commerce organized a “Buy a Bird” campaign. During this campaign, school kids raised money to introduce bird species like the Northern cardinal.

Female cardinal on our balcony. One of the many invasive bird species on Hawaii

Though they are very pretty and brilliantly red, cardinals are a threat to the native Hawaiian birds by taking over food sources and nesting locations.

The Common Myna: World’s Worst Invasive Alien!

Like the house sparrow, another scavenger bird is the myna. The first time I saw mynas was in Singapore and I remember them fondly as loud, bold and very present. They remind me of magpies and blue jays in their behavior. It was lovely to meet another statutory of them. And it was nice to actually recognize a bird in Hawai’i, beyond house sparrows and house finches.

Invasive birds of Hawai'i: the common myna.
Two Common Myna’s in conversation

But beware! It is not as much fun as it seems. This is one of the only three birds on the IUCN’s list of “100 of the World’s Worst Invasive Alien Species”. Native to India, we introduced them to Hawai’i in 1865 to control army worms.

Myna bird in Hawaii
Myna Bird

Nowadays they are all over the place and like the other invasive birds, they compete with native species for food and nesting space. Not only that, they also spread disease.

Spreading Salmonella…

Myna birds carry salmonella and avian malaria. In addition, they have mites, which can cause dermatitis and worsen asthma in humans. So however cute looking they might be, they simply do not belong on Oahu.

Spotted Doves: It’s Not all Fun and Games

Back in the 1800s, when hunters were looking for targets, they had the brilliant idea to import game birds from Asia.

Spotted dove, one of the many invasive species in Hawaii, thanks to us humans.
One of the many doves

One of them was the spotted dove, which quickly settled on the islands and still is a popular game bird in Hawaii.

Native Birds of Hawai’i (both Indigenous and Endemic

Thankfully we did manage to see some native birds in addition to all the invaders. Maybe you wonder what the difference is between endemic and indigenous. Both are native, but that endemic means that these bird species only exist in Hawai’i, nowhere else. Indigenous birds can be found in other geographic locations, and they somehow found their own way to Hawai’i, without human intervention.

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Harry the Hungry Black-Crowned Night Heron (ʻAukuʻu)

Back in New Hampshire, we always refer to our local Great Blue Heron as “Harry”, so we were happy to see one of Harry’s cousins show up in Honolulu. Surprisingly, our first encounters with ‘Auku’u (their Hawaiian name) were at the Hilton Hawaiian Village.

They actually are very wide spread, breeding on every continent except Antarctica and Australia. Basically ignoring the humans in the resort, they happily ate the colorful fish in the ornamental ponds.

Native bird of Hawai'i: ʻAukuʻu
Black-Crowned Night Heron

Hawaiian Black Noddy (Noio)

When we took a tour to explore the road to Hana, on Maui, I was happily surprised to see a colony of sea birds. Back then I didn’t know who they were, but it turns out that they are Black Noddies, a subspecies that is also called the Hawaiian Noddy.

Amazing flyers, they were too far away to get good pictures, but at least these should give you an idea of the desolate landscape and pretty birds. And they are native to the Hawaiian islands.

Pacific Golden-Plover (Kōlea)

Happy to find another native Hawaiian bird, although this one is a real globetrotter. They spend the winter in Hawaii, but their breeding grounds are all the way up in Alaska!

Their Hawaiian name Kōlea is based on their keening flight call which loosely means “one who takes and leaves.” One Hawaiian proverb, “Ai no ke Kōlea a momona hoi i Kahiki!” explains that they eat until they are fat, and then return to the land from which they came. (i.e. the Arctic tundras)

Indigenous bird of Hawaii: the Pacific Golden Plover

Because they are very used to humans, they can easily be found on golf courses and other grassy areas. They eat almost anything that crawls or tries to hide in the lawn. Supplementing those insects, spiders, and small reptiles with berries, leaves, and seeds provides them with a varied diet.

KoleaCount

The Hawaii Audubon Society started a citizen science project called Kōlea Count. Since these plovers return to the same territory each year, scientist have been able to attach tiny light level geolocator devices to the birds and retrieve them the following year. Such research showed that the birds made the 3,000-mile (4,800 km) nonstop flight between Alaska and Hawaiʻi in 3-4 days. Just wow!

Conclusion Birds of Hawai’i

The more I researched this article, the more I blamed humanity for not leaving well enough alone. Still, I hope this article has given you a deeper insight into the birds of Hawai’i and where they fit into the big picture. Have you been to Hawai’i? Which island and which bird did you like best? Did you know so many of them are invasive?

Please let us know in the comments.

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Don’t Skip a Visit to Pearl Harbor

Birds are nice, but don’t skip honoring our fallen heroes at Pearl Harbor.

Other Things to Do on Oahu

Birding Your Way Around The World

Pin Beginner’s Birding Guide to Hawai’i

Did you know that most of the common birds in Hawai’i are introduced by humans and now are invasive pests. Sure, they might look fabulous and colorful. Yes, they have melodious bird songs. But their main activity is killing off the native Hawaiian birds by competing for food and living space. Find out the sordid details and discover the native birds that hung on for dear life and can be easily observed! #Hawaii #birding #OurCarpeDiem #InvasiveSpecies-


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8 responses to “Invasive Nuisances! The Best Beginner’s Guide to Birds of Hawai’i”

  1. […] Learn about the Birds of Hawai’i and why so many of them are invasive pests! […]

  2. […] Meet the birds of Hawai’i! Some are native, but most are not! […]

  3. […] After a while I made it to a more open part of the trail where I decided to switch from beating myself up to bird watching. Blissfully unknowing back then that all those “Hawaiian” birds were actually invasive species… […]

  4. Literary Dates Avatar

    The mynas as invasive as they are look kinda funny so I kinda like them. But I think the red crested cardinals are the prettiest! I had no idea Hawaii was filled with so many invasive bird species. My brother told me that squirrels aren’t native to our city. That they were introduced to our parks to add some fun. I had no idea about that either.
    Now I want to know more about the birds that are native to Hawaii. I hope they still endure despite the invaders.
    Cool post!

    1. Karen Lanzetta Avatar

      Thanks! Yes, i love mynas because they remind me of blue Jays and magpies but they clearly don’t belong on hawai’i.
      It was cool to research all these Hawaii birds but discouraging to find out how we messed up the native birds. Harry the night heron is native so that made me happy 🙂

      I had no clue about the squirrels in central park, i just knew about the house sparrows and the European starlings being introduced there.

      Anyway, stuck at home quarantining for a bit, so i have time to write and research. Working in the makapuu lighthouse trail now so i got distracted by Fresnel lenses 🙂

  5. […] Beginners Birding Guide to Hawai’i. Discover how most of these pretty birds are actually invasive pests! […]

  6. […] our slight disappointment when learning that most birds in Hawai’i have been introduced by humans, it was nice to enjoy this native species of […]

  7. […] Invasive Alien Birds in Hawai’i: don’t get fooled by their beauty; […]