Honolulu Buildings Help Some Hawaiian Seabirds Survive

White Terns are nesting in Honolulu's buildings, showing they can live in cities. This is different from many other Hawaiian birds that are struggling.
By Newsroom | Wildlife, Hawaii |

HONOLULU, HI – In a twist of ecological fate, certain seabird species native to Hawaii are finding unexpected havens within Honolulu's sprawling urban landscape, a stark contrast to the dwindling populations of their counterparts facing decline due to disease and invasive predators on other islands.

The White Tern (Manu O Ku), a seabird historically reliant on island shorelines and offshore islets for nesting, has demonstrated a peculiar adaptability by successfully integrating into the built environment of Oʻahu's capital. These birds, which forage at sea and nest on land, are now being observed with increasing frequency amidst the concrete and structures of urban neighborhoods.

This phenomenon runs counter to the broader narrative of avian collapse in the Hawaiian archipelago, where many indigenous bird populations have been decimated. While traditional nesting grounds shrink under the weight of human development, some seabirds, like the White Tern, appear to be navigating these altered landscapes with a degree of resilience.

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Studies on other native Hawaiian seabirds, such as the Wedge-tailed Shearwater ('Ua'ukani), have also indicated a surprising lack of difference in chick survival rates even in areas with significant human presence. This suggests that for some species, the disruption caused by development might not be an insurmountable barrier to reproduction.

How a seabird native to Hawaii has adapted to life in Honolulu's concrete jungle - 1

Urban Adaptation and Broader Seabird Concerns

The resilience of species like the White Tern in urban settings highlights a broader, often overlooked, aspect of seabird ecology in Hawaii. For years, conservation efforts have focused on preserving traditional habitats and combating threats on more remote islands. However, the presence of endangered species like the Newell's Shearwater and Hawaiian Petrel, once thought to have abandoned Oʻahu entirely, has been confirmed more recently.

"No one thought that two of Hawaii’s most endangered seabird species still lived on Oahu, the archipelago’s most populous island."

This rediscovery underscores the complex nature of conservation, where even the most populous islands can harbor unexpected pockets of biodiversity. It also raises questions about the effectiveness of past assumptions regarding species distribution and habitat utilization.

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Tracking and Understanding Seabird Populations

Researchers continue to grapple with the challenges of comprehensively mapping and understanding the populations of breeding seabirds across the main Hawaiian Islands. The U.S. Geological Survey's Western Ecological Research Center, in collaboration with various partners, is actively working to generate an 'Atlas of Breeding Seabirds of the Main Hawaiian Islands'. This initiative aims to fill critical data gaps concerning the locations and sizes of seabird colonies, essential for informed resource management.

Efforts at places like the Freeman Seabird Preserve focus on monitoring population trends, survivorship, and reproductive success. These initiatives involve techniques ranging from virtual tours and habitat renovation to using real data to graph trends across different nest types and track migration patterns.

The 'conservation' of seabirds in Hawaii remains a multifaceted challenge, encompassing not only the protection of wild spaces but also an evolving understanding of how these species navigate and persist within increasingly human-dominated environments.

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Frequently Asked Questions

Q: Why are some Hawaiian seabirds living in Honolulu's buildings?
Some seabirds, like the White Tern, are finding that Honolulu's city buildings are safe places to nest. This is happening because their natural homes on islands are shrinking, and these city spots offer protection from dangers like disease and predators.
Q: Are all Hawaiian seabirds doing well in the city?
No, not all seabirds are doing well. While some species like the White Tern are adapting to city life, many other native Hawaiian birds are in danger and their numbers are going down.
Q: What does this mean for conservation efforts in Hawaii?
It means conservationists need to look at new places where birds might live, even in cities. Understanding how birds use urban areas is now important for saving them, alongside protecting wild spaces.
Q: Are there plans to study these urban seabirds more?
Yes, researchers are working on a book called 'Atlas of Breeding Seabirds of the Main Hawaiian Islands'. This will help them understand where seabirds are nesting and how many there are, including those in cities.