Nepedia
Back to Discover
Advanced Reader
🧬

Patagona

life science Maturity 5-7 Next article →

The genus Patagona contains some of the most impressive birds in the hummingbird family. This group includes two distinct species: the sedentary giant hummingbird and the migratory giant hummingbird. These birds are the largest and second-largest species within the hummingbird lineage. They are unique because they sit near the physical limits of what a hummingbird can be. Their large size and high energy needs must work in harmony with the thin air of high altitudes.

Giant Hummingbirds (7426020288)
Giant Hummingbirds (7426020288)

Physically, the giant hummingbird is easy to recognize due to its specific anatomy. They possess a straight bill that is longer than their head and a moderately forked tail. Their wings are exceptionally long, nearly reaching their tail tips when folded against the body. They also have large, sturdy feet and tarsi that are feathered all the way to the toes. While they are much larger than the tiny bee hummingbird, they remain quite light. This lightness is due to a slender build and a long bill that makes the body a small proportion of their total length.

Patagona gigas-perching
Patagona gigas-perching

The flight mechanics of the Patagona genus differ from smaller hummingbirds. Most hummingbirds flap their wings very rapidly, but the giant hummingbird averages only 15 wing beats per second. This is a relatively slow rate for such a bird. However, their elongated wings allow them to perform a behavior that is very rare among hummingbirds: gliding. This gliding helps them move more efficiently through the air. To maintain this activity, their physiology must work at an incredible pace. Their resting heart rate is 300 beats per minute, but it can peak at 1020 beats per minute during flight.

Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike
Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike

Because of their size, these birds have extreme metabolic requirements. They require an estimated 4.3 calories of food energy every hour just to sustain flight. This is especially difficult because they often live at high altitudes where oxygen is low and the air is thin. Thin air generates very little lift, making it harder to stay airborne. To meet their energy needs, they primarily consume nectar from various flowers. They also eat insects to gain necessary protein and minerals.

Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike
Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike

Dietary habits also include specific behaviors to maintain health. For example, female giant hummingbirds have been observed ingesting calcium sources like sand, soil, slaked lime, and wood ash. They do this after the reproductive season to replace the calcium used to produce their eggs. Nectar alone does not provide enough calcium for this process. The birds also share a symbiotic relationship with flowers of the genus Puya in Chile. In this partnership, the hummingbird acts as an efficient pollinator while receiving food in return.

Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike
Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike

Scientists have spent many years studying the history and classification of these birds. The giant hummingbird was first described and illustrated in 1824 by the French ornithologist Louis Pierre Vieillot. Initially, Vieillot mistakenly believed the specimen had been collected in Brazil. Later, in 1945, Carl Eduard Hellmayr designated Valparaíso in Chile as the type locality. In 1840, George Robert Gray introduced the genus Patagona, originally placing only the giant hummingbird within it. Modern molecular phylogenetic studies have since revealed that the giant hummingbird has no close relatives. It is considered a sister to the large hummingbird subfamily known as Trochilinae.

Líneas de Nazca, Nazca, Perú, 2015-07-29, DD 52
Líneas de Nazca, Nazca, Perú, 2015-07-29, DD 52

Understanding the ecosystem of the Patagona is vital because they are vulnerable to changes. Many visitors, such as other birds or animals, visit flowers to eat nectar. Some of these visitors are "nectar robbers" that pierce the base of flowers to reach the nectar without pollinating them. This behavior can reduce the amount of nectar available for the giant hummingbird. If invasive or alien species are introduced that steal nectar, it could significantly impact local populations. Because these birds live so close to their metabolic limits, such changes in the environment pose a serious risk to their survival.

Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike
Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike
634 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (4)
File:Patagona gigas-perching.jpg
Patagona gigas-perching.jpg
File:Giant Hummingbirds (7426020288).jpg
Giant Hummingbirds (7426020288).jpg
File:Giant hummingbird Patagonia Gigas on cactus in Peru by Devon Pike.jpeg
Giant hummingbird Patagonia Gigas on...
File:Líneas de Nazca, Nazca, Perú, 2015-07-29, DD 52.JPG
Líneas de Nazca, Nazca, Perú, 2015-07-29,...
More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.