Merlin vs Eurasian Hobby

In short

Merlins and Eurasian Hobbies are both small falcons, but they can be distinguished by their structure and plumage. Merlins are stockier with shorter wings and tails, while Eurasian Hobbies are more slender with longer wings and tails. Plumage differences include the Hobby's distinctive red 'trousers' and facial markings.

Identification tips

1. Look for the Eurasian Hobby's red 'trousers' and white throat. 2. Note the Merlin's stockier build and shorter wings. 3. Observe flight style: Hobbies are more acrobatic. 4. Consider habitat: Hobbies near water, Merlins in open woodlands. 5. Use vocalizations cautiously as they are less reliable.

Size

Merlins are more compact and robust, whereas Eurasian Hobbies are slightly larger and more slender.

Plumage

Merlins have a more uniform plumage with a bluish-gray back in males and brown in females, while Eurasian Hobbies have a dark slate-gray back with a white throat and distinctive reddish 'trousers' on the undertail coverts.

Behaviour

Both species are agile fliers, but the Eurasian Hobby is known for its swift, acrobatic flight and often hunts insects on the wing, whereas Merlins are more likely to pursue birds.

Habitat

Merlins are often found in open woodlands and grasslands, while Eurasian Hobbies prefer open areas with scattered trees, often near water.

Voice

Merlins have a rapid, high-pitched call, while Eurasian Hobbies have a more varied call, but vocal differences are not the most reliable field marks.