The common buzzard and the Eurasian sparrowhawk share the French sky and regularly cross paths above the same rural landscapes. However, the two diurnal raptors belong to distinct genera (Buteo for the buzzard, Accipiter for the sparrowhawk), and their hunting strategies, silhouettes, and diets differ in almost every respect. Identifying either one in just a few seconds of observation requires knowing where to look and, above all, what to look for.
Long tail or short tail: the criterion that distinguishes them in flight
Most birdwatching guides start with plumage. In the field, plumage is of little help. The common buzzard lives up to its name: its colors range from very dark brown to almost white beige, with all intermediate shades. Starting with color to identify this raptor often leads to a dead end.
Further reading : How to install a power strip with integrated outlet in your kitchen
The most reliable criterion remains the proportion between the wings and the tail. The buzzard has broad wings and a short fan-shaped tail, which barely extends beyond the trailing edge when the bird is gliding. The Eurasian sparrowhawk shows the opposite: shorter and significantly narrower wings, paired with a long tail that acts like a rudder among the branches.
Understanding the difference between buzzard and sparrowhawk starts with this wing-to-tail ratio, observable even from a respectable distance. A raptor whose tail clearly exceeds the width of its wings in flight will almost always be an Accipiter in our regions.
Read also : How a French Person Can Buy a House in Canada: Steps and Practical Tips
Soaring flight vs. low flight: two ways to occupy space
Flight style is the second identification filter, and probably the most useful when the silhouette remains ambiguous against the light.
Buzzards spend long minutes soaring in circles at medium height above fields or edges. They exploit rising thermal currents and turn without flapping their wings for considerable durations. They are also frequently observed in imperfect stationary flight, facing the wind, above a bank or roadside.
The Eurasian sparrowhawk only glides very briefly. Its typical flight alternates a few rapid flaps with a short glide, all at low height. It skims the hedges, follows the edges, bursts over a garden wall, and disappears as quickly as it appeared. The appearance of a sparrowhawk rarely lasts more than a few seconds, which complicates identification for beginners.
The clue of the observation location
The common buzzard frequents open environments: meadows, cultivated fields, highway edges. It readily perches on a fence post or an isolated tree, well in view. The sparrowhawk hunts in more closed environments (hedges, thickets, wooded gardens) and remains difficult to spot when perched.
Observing a raptor perched in an open field points towards the buzzard. Seeing a raptor darting out of a hedge at full speed in pursuit of a passerine points towards the sparrowhawk.
Diet and behavior at feeders
What a raptor eats determines its morphology. The common buzzard primarily feeds on small mammals (voles, mice) and earthworms. Its hunting relies on patience: it waits from a perch and then swoops down on the prey on the ground.
The Eurasian sparrowhawk specializes in passerines. Tits, sparrows, and finches make up the majority of its diet. Its technique relies on speed and the element of surprise, not on prolonged waiting.
- A raptor that hovers for a long time above a plowed field hunts rodents: it’s a buzzard.
- A raptor that suddenly scatters the birds from a feeder by crossing the garden like a missile: it’s a sparrowhawk.
- A raptor perched on the ground in a meadow, seemingly motionless, feeding on worms or a carcass: the buzzard, again.
Naturalist surveys regularly report the presence of sparrowhawks around garden feeders in winter. Feeders’ owners who notice sudden disappearances of passerines, accompanied by feathers on the ground, are likely hosting a sparrowhawk in their vicinity.
Size and bulk: a visible gap to the naked eye
The common buzzard is a medium to large-sized raptor, significantly larger than a pigeon. The Eurasian sparrowhawk is just slightly larger than a pigeon, making it one of the smallest diurnal raptors in Europe.
Sexual dimorphism complicates matters with the sparrowhawk. The female sparrowhawk is noticeably larger than the male, to the point that a large female can approach the size of a small male buzzard. Field reports vary on this point, and this overlap zone regularly traps observers.
The beak and eye as complementary clues
The sparrowhawk’s beak is small and curved, relatively discreet compared to its head. Its yellow-orange iris contrasts with a fairly compact round head. The buzzard has a more robust beak and a less “piercing” gaze at close range.
These details only serve to confirm an identification already initiated by the silhouette and flight. They only work at very close range or in photographs.
Summary of field criteria
- Flight silhouette: wide wings and short tail for the buzzard, narrow wings and long tail for the sparrowhawk.
- Flight style: prolonged soaring in circles (buzzard) versus low and brief passes (sparrowhawk).
- Hunting habitat: open spaces and exposed perches (buzzard) versus hedges, edges, and gardens (sparrowhawk).
- Main prey: small mammals and worms (buzzard) versus passerines (sparrowhawk).
- Size: significantly larger than a pigeon for the buzzard, barely larger for the male sparrowhawk.
Identifying raptors in flight remains an exercise where accumulated experience counts as much as theoretical knowledge. Each observation adds a visual reference, and the distinction between buzzard and sparrowhawk becomes, over time, almost instinctive even before one has consciously analyzed the silhouette.