Steppe eagle

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Steppe eagle (Aquila nipalensis)

Overview
The steppe eagle is a large bird of prey in the eagle family. It is mainly dark brown, with a strong bill and long wings. Adults and juveniles look different, with juveniles generally lighter and more patterned. It used to be grouped with the tawny eagle, but scientists now recognize them as separate species.

Status
The steppe eagle is endangered (IUCN).

Where it lives
- Breeding: It nests in open steppe habitats across Russia, Kazakhstan, Mongolia, and northern China. Some nests are on the ground or on low rocky outcrops; others are on cliffs or low in bushes.
- Migration: It is highly migratory. It breeds in Eurasia and spends the winter in Africa, the Middle East, and parts of southern Asia. Major routes pass through the Middle East, the Red Sea region, and the Himalayas.
- Wintering: In winter, it can be found across Africa, parts of the Arabian Peninsula, and into parts of South Asia.

What it eats
- Diet varies by season and location. On breeding grounds, it mostly preys on small mammals (especially ground squirrels) and sometimes birds, reptiles, or insects.
- In winter or at feeding sites, it may take carrion, insects (like termites and locusts), and food from dumps or landfills.
- It is an opportunistic hunter and often scavenges or kleptoparasitizes other birds, stealing catches when possible.

Nest and reproduction
- Nests are large platforms that can be built on the ground, on rocky ledges, or on cliffs; in some areas they are even on man-made structures.
- Clutch size is usually 2 eggs. In successful nests, 1–2 young typically fledge.
- Eggs are off-white with light markings. The incubation period is about 45 days, and the young fledge after roughly 55–65 days.
- Nest sites can be on the ground or elevated, depending on the habitat. Some nests are surprisingly close to human activity, while others are in remote steppe areas.

Migration and movement
- Steppe eagles undertake massive migrations, sometimes traveling with large flocks.
- Two main migration routes are well known: a western route through the Middle East and Red Sea region, and an eastern route along the Himalayas and into South Asia.
- They can cover thousands of kilometers between breeding and wintering grounds, and juveniles may wander widely before settling into wintering areas.

Dietary habits and hunting style
- They hunt mainly from low soaring or gliding flights, diving onto prey on the ground.
- In some regions they hunt in groups or switch to feeding at dumps and other easy food sources during non-breeding periods.
- The steppe eagle is especially fond of small burrowing mammals like ground squirrels, but its diet can include marmots, hares, weasels, gerbils, and occasionally birds, reptiles, and large insects.

Threats and declines
- The main threats are habitat loss due to agriculture, wildfires, and changes to steppe ecosystems.
- Electrocution and collisions with power lines cause many deaths, especially in parts of Kazakhstan and Russia.
- Nest disturbance, trampling by livestock, and human persecution also contribute to nest failures.
- Poisoning and poisoning from rodent-control programs harm eagles and other wildlife.
- Climate change may increase fires and alter steppe habitats, further stressing populations.

Population and conservation
- The global population has declined sharply in recent decades, leading to its Endangered status.
- The western part of the range shows particularly strong declines; some eastern areas are more stable but still face pressures.
- Conservation priorities include reducing powerline deaths, protecting nesting habitats, limiting wildfires, and reducing poisoning and habitat destruction.
- Some proposed measures to help reduce electrocution include adding protective perches around towers and improving nest safety at key sites.
- International cooperation is essential, as the species crosses many country borders.

Cultural significance
- The steppe eagle is a symbol in some regions; it appears on the flag of Kazakhstan and is the national bird of Kazakhstan and Egypt.

Identification notes
- Steppe eagles are bulky and powerful looking, with a broad wingspan and a large head. Adults are mostly uniform brown, while juveniles are paler with more visible markings on the wings and tail.
- They can be confused with some other large eagles, but their size, wing shape, and ground-nesting habit help distinguish them.

Summary
The steppe eagle is a large, ground-nesting eagle of the Eurasian steppes that migrates to Africa and the Middle East in winter. It relies heavily on small mammals like ground squirrels but can adapt to a variety of foods. Its population is declining due to habitat loss, fires, poisoning, and dangerous powerlines, earning it an Endangered status. Protecting steppe habitats, reducing human-caused threats, and coordinating international conservation efforts are crucial to securing its future.