How to identify the Decidueye

To correctly identify the Decidueye (Decidueye), check each of these features. Birds can be tricky: habit, habitat, and call often confirm a sighting that a single photo cannot.

Size at a glance

Length

80-95 cm

Wingspan

180-220 cm

Weight

3.5-5.0 kg

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   Adults exhibit a dark, mottled brown and grey plumage on the dorsal side, providing excellent camouflage against tree bark. The ventral side is lighter, often a pale grey or off-white with dark streaking. A prominent feature is the dark, cowl-like facial disc, which is bordered by a lighter, almost white, 'hood' of feathers that extends around the back of the head and neck. The wings are broad and rounded, with dark barring on the flight feathers. The tail is relatively long for an owl, dark brown with lighter bands.

2. 2

   Beak shape

   Shape and color of the bill: a key field mark.

   Strong, sharply hooked, and dark grey to black.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Piercing yellow to amber eyes, set within the dark facial disc.

4. 4

   Leg color

   Leg and foot color.

   Feathered legs and feet, typically dark grey with black talons.

5. 5

   Distinguishing features

   Standout features that separate this species.

   The most distinctive features are the dark, almost black, facial disc resembling a hood, contrasted by the lighter, almost white, feathering around the back of the head and neck. Its long, dark tail is also a key identifier. The primary feathers often have a slightly iridescent, dark green sheen in certain light conditions, though this is subtle.

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles have a softer, fluffier plumage, often appearing more uniformly greyish-brown with less defined facial markings. The 'hood' is present but less starkly contrasted. Their eyes may appear duller yellow. They gradually acquire adult plumage over their first year.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   No significant seasonal changes in plumage. The coloration remains consistent year-round.

8. 8

   Sexual dimorphism

   How males and females differ.

   Minimal sexual dimorphism; females are generally slightly larger and heavier than males, but plumage coloration is identical.

Key field marks

• Facial Disc and 'Hood'. Look for the dark, almost black, cowl-like facial disc, sharply contrasted by the lighter, almost white, feathering that forms a 'hood' around the back of the head and neck. This is the most definitive field mark.
• Eye Color. Observe the piercing yellow to amber eyes, which stand out against the dark facial disc.
• Tail Length. Note the relatively long, dark tail for an owl, often visible when perched or in flight.
• Plumage Pattern. Identify the mottled dark brown and grey dorsal plumage with lighter, streaked underparts. Look for subtle dark green iridescence on primary feathers in good light.
• Vocalization. Listen for its deep, resonant 'hoo-hoo-hoo-hoo-hoo' song, a key auditory identifier, especially at night.

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