Although the Harpy Eagle is massive, weighing 17–20 pounds, it is built very differently from many other large raptors. Despite their weight and the enormous size of their legs, feet, and talons, Harpy Eagles actually have a relatively short wingspan compared to birds like the Bald Eagle and Golden Eagle. This compact wing structure is an adaptation for navigating and hunting within dense tropical forest canopies rather than soaring in open skies. Because of this, they rely less on gliding and more on powerful, controlled flight through trees. 

Like most eagles, the female Harpy is significantly larger than the male; sometimes nearly twice the size. Their physical strength is most evident in their legs and talons, which are among the largest and most powerful of any eagle. The rear talons can reach 4-5 inches in length, comparable to the claws of a Grizzly Bear, and are capable of exerting tremendous pressure. This allows the Harpy Eagle to be a highly efficient and formidable predator in their environment, often catching (and lifting) prey nearly equal to its own body weight. 

The journey to adulthood for Harpy Eagles is gradual, with juveniles going through four molts before reaching full adult plumage at four years of age.

Harpy Eagles are the National Bird of Panama and are an Ecuadorian symbol of biodiversity (alongside Andean Condors!). However, their wild populations are dwindling due to human activities such as deforestation and pesticide usage. 

The Peregrine Fund, a fellow conservation organization, launched the Harpy Eagle Release Project in 1989, working in collaboration with accredited partners to house these magnificent raptors. As part of this effort, a bonded pair was sent to Zoo Miami, where they hatched a chick in 2025. That chick – now full-grown – resides in The Charity Randall Foundation Eagle Hall at the National Aviary, representing a meaningful step forward in the conservation of one of the world’s most unique birds of prey. She’s the ONLY Harpy Eagle to reside in the United States’ Northeast.

The Central Asian Tortoise thrives in dry, semi-arid regions with sparse vegetation. They are characterized by their domed, yellowish-brown to green shells featuring a distinct pattern of light and dark markings.

They feed primarily on grasses, weeds, and some flowers and are well-adapted to surviving harsh environments. In their natural habitats, their diet helps control the growth of vegetation, protecting the delicate balance of their respective ecosystem. They have a slow metabolic rate and are typically solitary– only coming together during breeding season.

Measuring around eight – 10 inches in length, it’s a docile tortoise that is facing population decline due to the illegal pet trade and poaching.

Ecologists have even recorded birds using desert tortoise burrows for survival such as gathering nest materials, taking dust baths, and hunting. 

The Marbled Teal is a duck of the Mediterranean region, particularly fond of shallow brackish and freshwater pools with abundant emergent vegetation. This is an omnivorous dabbling duck, eating seeds, roots, tubers, and green parts of aquatic plants, as well as aquatic invertebrates like midge larvae. The Marbled Teal is threatened by over-hunting, and by climate change which is causing droughts in an already arid region, reducing the shallow marshes that this duck depends on.

Andean Condors are among the largest flying birds, with a body weight of up to 30 pounds and a wingspan of over 10 feet. They are mostly black with large white patches on their wings and the distinctive bald head for which vultures are known. Condors have no feathers on their heads which facilitates cleaning after they have been feeding on carrion (after a meal, condors can frequently be seen wiping their heads on the ground to clean themselves off). Their diet primarily includes large land mammals, but condors have been seen feeding on the carcasses of seals and whales near the coast. Andean Condors may travel 150 miles a day in search of food and they often feed in groups. As scavengers, Andean Condors act as a natural clean-up crew, eating dead animals before they become a health risk to humans. In addition, the direct exposure of their skin to the disinfecting properties of ultraviolet light helps eliminate any residual bacteria. The Andean Condor is the only New World vulture that shows obvious differences between males and females. Males have dark eyes and a fleshy crest, called a “caruncle”, on their heads, while females have bright red eyes and lack the crest. Andean Condors may live 50 years or more.

Although they are long-lived, Andean Condors reproduce slowly and are vulnerable to human persecution, including both intentional and secondary poisoning. Since 1989, over 60 of these spectacular birds have hatched in U.S. zoos, and some have been released in the remote regions of Colombia, including a male chick named Kendall that hatched at the National Aviary in 2003. A female chick named Kachina, hatched at the Aviary in 2007, is currently part of a breeding program at another zoo to help the species’ population grow. The National Aviary is currently partnering with Bioparque Amaru, a zoo in Ecuador, where the population has dwindled to about 25 pairs of adult breeding birds and fewer than 150 condors in all. In 2022, the National Aviary celebrated the hatching of Marijo, the first Andean Condor to hatch in Condor Court!

The National Aviary is delighted to welcome a new male Andean Condor, Chavín, to our flock as part of an AZA-led Species Survival Plan®. Witness the majestic beauty of Chavín, Lianni, and juvenile counterparts, Marijo and Illimani, during your next Aviary visit.

The Palawan Peacock-pheasant is a gorgeous bird with vibrant plumage; males have bright blue accents while females have striking markings and less colorful plumage. The spots on their feathers resemble eyes and may help scare away predators. Males use their remarkable plumage in an elaborate courtship display. Palawan Peacock-pheasants are strictly monogamous, and both males and females help with the rearing of young. Like many related pheasants, this species is threatened by loss of habitat and hunting.

A fabulously majestic resident of tall, dry, primary, and secondary forests of the Indo-Malayan region, the Great Argus forages solitarily for fruit, seeds, flowers, and invertebrates on the forest floor. The bird’s taxonomic and common names both derive from Argus, the hundred-eyed giant, from Greek mythology (a reference to the many eye-like spots on the Argus’s wings and tail). Male Great Argus put on quite a courtship show on their “dancing grounds”: they carefully clear an area of all debris, then march in circles and stomp their feet loudly in front of the female. Then, he’ll show off his feathers in an incredible display, with wing feathers fanned out around his body and his two long tail feathers high up above him. The male’s call is a very loud and startling, “Kwow-wow!” Habitat loss from legal and illegal logging and hunting and trapping threaten the future of this remarkable pheasant.

The Crested Partridge is a fairly small, quail-like bird; its short tail adds to a rotund appearance. A native of low elevation, broad-leaved evergreen and dense primary forests, the Crested Partridge consumes a variety of seeds, large fruits, large beetles, ants, and snails. This species is considered Vulnerable because of habitat lost to logging and other human activities.

An inhabitant of high mountain ranges in eastern China, the Cabot’s Tragopan—also sometimes called the Yellow-bellied Tragopan—is a grouse-like bird. Male Cabot’s Tragopans perform a spectacular display at dawn and dusk, sometimes while perched on a mossy log, which is reminiscent of Pennsylvania’s state bird, the Ruffed Grouse. Both the Ruffed Grouse and Cabot’s Tragopan flap and drum their wings during courtship displays, but the tragopan takes it a step further, slowly fanning his wings while rhythmically pumping his head up and down. He inflates two fleshy blue horns on top of his head, unfurls a red-and-blue wattle, then abruptly rears up, drums his wings, and cranes his neck. The display transforms this dusty brown bird into a colorful curiosity! This species is threatened by logging and farming, as well as hunting outside of protected areas.

The Military Macaw, a parrot species with a fragmented range running from Mexico to northwest Argentina, is a playful and inquisitive bird. Each Military Macaw has a unique pattern of feathers on its face, similar to a human fingerprint. They also have incredible vision and are able to see colors on the ultraviolet spectrum that humans cannot. They can fly distances of 15 miles each day to feed on a variety of palm nuts, seeds, and figs. Like Hyacinth Macaws, Military Macaws will lick clay to detoxify poisonous substances in their diets. Despite the extensive range of this macaw, their populations are isolated by fragmented habitat, and local losses of populations are likely due to the illegal pet trade. Habitat loss continues to impact populations of the Military Macaw.

The Hyacinth Macaw is a beautiful inhabitant of várzea, savanna, palm-savannas, and similar habitats adjacent to tropical forests in central and eastern South America. These intelligent and social birds are sometimes known as “gentle giants” for their gentle personalities and their large size. They are the largest macaw species, with strong beaks to match: some Hyacinth Macaws have beaks strong enough to crack open a coconut! They are especially adept at opening notoriously tough palm nuts. In response, palm trees have evolved to produce harder and harder nuts, but Hyacinth Macaws are evolving bigger beaks with each generation. Like all parrots, Hyacinth Macaws are great imitators and can mimic human speech. Fewer than 6,500 Hyacinth Macaws remain in the wild, as the species is vulnerable to the illegal pet trade, habitat loss, and hunting.

The National Aviary’s Tropical Rainforest habitat is home to two female Hyacinth Macaws, Jewel, seen on the left, and Sapphira, seen on the right.  Both Jewel and Sapphira arrived at the National Aviary in 2018 and have been getting to know each other in their shared space above the waterfall, now featuring multiple new perching areas for them to explore as they bond. Their expert care team has been observing the two closely and are delighted to see positive signs of a social bond being built between them.

The Southern Bald Ibis is a gregarious, glossy bluish-black ibis restricted to the southern tips of South Africa. This ibis resides in mountainous regions, where it prefers higher elevation short-grass habitats, as well as recently burned, plowed, mowed, or heavily grazed fields and cultivated lands. In these grasslands, the Southern Bald Ibis feeds frequently in large flocks, primarily searching for grasshoppers, beetles, and caterpillars. This species usually nests colonially, building a platform of sticks on ledges or cliffs where it may be safer from predators. This ibis has suffered from human disturbances at its colonial nest sites, and impacts on grassland foraging grounds.

The Steller’s Sea Eagle is a fierce, impressive raptor with chocolate-brown plumage and striking white shoulders and tail. With its deep, strongly arched bill and massive yellow feet, it’s no wonder that the Japanese call this bird O-washi (The Great Eagle). At nearly four-feet in length and an average weight of 13-20 pounds, Steller’s Sea Eagles are one of the largest eagle species in the world, outweighing both the Harpy Eagle (Harpia harpyja) and the Philippine Monkey-eating Eagle (Pithocophaga jefferyi), and with a wingspan (up to 6 – 8 feet) second only to its near-cousin the White-tailed Eagle (Haliaeetus albicilla). Not surprisingly, an adult Steller’s Sea Eagle has no natural predators.

The species is vulnerable to changes in its habitat and food supplies, however. This huge eagle needs an equally huge territory, so the Steller’s population (which is not large) is widespread and particularly sensitive to habitat loss due to climate change. Threats to already declining Pacific Salmon populations translate into potential prey shortages during the all-important breeding season.

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