Common Kestrel vs Gyr Falcon

In short

The Common Kestrel and Gyr Falcon differ significantly in size and plumage. The Common Kestrel is a small falcon with distinct rufous upperparts and spotted plumage, while the Gyr Falcon is larger and highly variable in color, often seen in gray or white morphs. Key identification features include size and wing formula differences.

Identification tips

• Size: The Gyr Falcon is significantly larger than the Common Kestrel.
• Plumage: Look for the rufous and spotted plumage in Common Kestrels, contrasting with the variable gray to white plumage of Gyr Falcons.
• Wing Formula: In flight, the relative lengths of primaries can help; however, this is more relevant when comparing Common Kestrel to Lesser Kestrel.

Size

The Common Kestrel is a relatively small falcon, whereas the Gyr Falcon is much larger, being one of the largest falcons.

Plumage

Common Kestrels have rufous upperparts with black spots and a gray head and tail in males. Gyr Falcons are highly variable, with plumage ranging from gray to white morphs, lacking the rufous coloration of the kestrel.