White-tailed Hawk

The White-tailed Hawk (Geranoaetus albicaudatus) is a magnificent, large-bodied raptor primarily associated with the tropical and subtropical Americas. Within the United States, its range is highly restricted, found almost exclusively in the coastal prairies and savanna-like grasslands of southern Texas. Characterized by its long, broad, and somewhat pointed wings, this species is built for efficient soaring in the strong sea breezes of its coastal environments. While it resembles typical eagles and buteos, it is classified under the genus Geranoaetus, highlighting its unique evolutionary path alongside species like the South American Black-chested Buzzard-Eagle.

Identifying a White-tailed Hawk depends heavily on the age of the bird, as their plumage undergoes a dramatic multi-year transition.

Adult

• Upperparts: Dark gray to bluish-gray back and head, contrasting with bright rufous (chestnut) shoulder patches on the lesser wing coverts.
• Underparts: Mostly pure white with very fine, subtle gray barring on the flanks and belly.
• Tail: Short and white, featuring a prominent, broad black subterminal band and a narrow white tip.
• Bare Parts: Bright yellow cere and legs; dark brown eyes.

Juvenile and Immature

• Plumage: Extremely dark, almost entirely blackish-brown overall. Young birds lack the white belly and rufous shoulders of the adults.
• Chest: Often shows an irregular white patch or "bib" on the breast, which becomes larger and cleaner as the bird matures.
• Tail: Grayish with numerous dark, thin bars, lacking the distinct black subterminal band of the adult.

In Flight

From below, adults show striking white underwing coverts contrasting with dark flight feathers. Their flight silhouette is distinctive: long, broad wings with pointed tips, held in a steady, shallow dihedral (V-shape) when soaring. They are famous for "kiting"—holding completely still in mid-air against a strong headwind.

White-tailed Hawks are birds of open country. They avoid dense forests, preferring flat or gently rolling terrain with sparse, low vegetation.

• Primary Habitats: Coastal prairies, dry grasslands, savanna, semi-arid shrublands, oak mottes, and agricultural fields.
• Distribution: Their range extends from the Gulf Coast of Texas and northern Mexico south through Central America and across large portions of South America (including Brazil, Argentina, and Colombia).
• Migration: They are generally non-migratory, year-round residents throughout their range. However, young birds may disperse widely in search of new territories, and coastal populations may move slightly inland during severe winter weather or major tropical storms.

Feeding and Hunting

White-tailed Hawks employ several highly effective hunting strategies. They spend hours soaring high above the ground or kiting in place, keeping their head pointed down to spot prey in the grass. One of their most famous behaviors is "fire-following." When lightning or agricultural practices spark grass fires, these hawks gather in significant numbers along the smoke line, swooping down to easily capture rodents, lizards, and insects fleeing the flames.

Vocalization

Their call is a distinctive, high-pitched, nasal laughing series. It is often written as ke-ke-ke-ke-ke or kut-kut-kut-kut, resembling a small bleating goat or a gull. This vocalization is typically given when defending territory or during courtship displays.

Nesting

Nests are bulky platforms of sticks, twigs, and thorny vegetation, built on top of low structures. Due to the lack of tall trees in their preferred habitat, they place nests in low trees (like mesquites), prickly pear cacti, or yucca plants, typically only 5 to 15 feet off the ground. The female usually lays 1 to 3 creamy white eggs, which are incubated for about 30 to 32 days.