Eurasian Sparrowhawk vs Eurasian Goshawk

In short

The Eurasian Sparrowhawk (Accipiter nisus) is a smaller, more slender bird of prey known for its striking slate-blue male plumage and rufous accents, while the Eurasian Goshawk (Astur gentilis) is larger, heavier, and exhibits a more robust build with a darker, streaked appearance, particularly in females. Understanding their size, plumage, and behavior is crucial for birdwatchers to distinguish between these similar raptors.

Identification tips

1. Birds of the World Similar-Species Diagnostics:
2. The Eurasian Sparrowhawk can be confused with the Eurasian Goshawk, particularly females, which are larger and heavier than males. "Some females are so large and heavy that they can be confused with the Eurasian Goshawk." (Source: Birds of the World, Eurasian Sparrowhawk)

3. The male Eurasian Sparrowhawk has distinct "slate-blue upperparts" and a "rufous wash to the cheeks and breast," both of which differ from the more uniformly colored Goshawk. (Source: Birds of the World, Eurasian Sparrowhawk)

4. AI Field Diagnostics:

5. Size & Shape: When observing these birds, note the size difference; the Goshawk is significantly bulkier. Look for a more compact body with broader wings and a shorter tail in Goshawks.
6. Plumage Patterns: Pay attention to the coloration; males of the Sparrowhawk are slate-blue, while Goshawks are generally more gray-brown with streaking. The prominent supercilium in the Sparrowhawk can also help identify it.
7. Flight Behavior: The Sparrowhawk's agile, darting flight is distinct from the Goshawk's powerful, steady flight. If the bird is seen hunting in open areas, it's more likely to be a Goshawk.
8. Vocalizations: Listen for their calls; the Sparrowhawk has a higher-pitched call compared to the deeper, barking sounds of the Goshawk.
9. Habitat Preferences: If the bird is in an urban area or garden, it's likely a Sparrowhawk, whereas the Goshawk prefers larger, more wooded habitats.

By focusing on these characteristics, birdwatchers can effectively distinguish between the Eurasian Sparrowhawk and the Eurasian Goshawk in the field.

Size

• Eurasian Sparrowhawk: Males weigh between 105–196 g and have a wingspan of approximately 60–75 cm. Females are larger, weighing 185–350 g, which can lead to confusion with the Eurasian Goshawk.
• Eurasian Goshawk: Generally larger and more robust than the Sparrowhawk, with males weighing 600–1,050 g and females ranging from 1,000–2,200 g. Their wingspan is significantly broader, around 125–140 cm.

Plumage

• Eurasian Sparrowhawk: Males display slate-blue upperparts and a rufous wash on the cheeks and breast, with brown barring on the lower body. Females are gray-brown above with a prominent supercilium, and both sexes have piercing yellow eyes.
• Eurasian Goshawk: Both sexes are more uniformly gray-brown with streaked underparts. The adult female has more prominent streaking and a more robust appearance than the Sparrowhawk. The Goshawk has a more rounded head and a shorter tail relative to body size.

Behaviour

• Eurasian Sparrowhawk: Known for agile flight, often hunting in wooded areas and using stealth to ambush smaller birds. Their flight style is characterized by rapid, flapping movements interspersed with gliding.
• Eurasian Goshawk: They exhibit powerful and direct flight, often hunting larger birds and mammals. Goshawks are more likely to hunt in open areas compared to the Sparrowhawk.

Habitat

• Eurasian Sparrowhawk: Prefers wooded areas, parks, and gardens with dense cover for hunting. They have a broad breeding range across the Palearctic.
• Eurasian Goshawk: Typically found in large forested areas, they require more extensive cover and are less common in urban environments compared to Sparrowhawks.

Voice

• Eurasian Sparrowhawk: Their calls are sharp and high-pitched, often described as a repetitive "kek-kek-kek."
• Eurasian Goshawk: Vocalizations are deeper and more resonant, often described as a barking "kak-kak-kak," especially during the breeding season.