How to identify the Abdim's Stork

To correctly identify the Abdim's Stork (Ciconia abdimii), 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

73-81 cm (29-32 in)

Wingspan

120-150 cm (47-59 in)

Weight

1.0-1.5 kg (2.2-3.3 lbs)

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   Adults have glossy black plumage on the head, neck, back, and wings, contrasting sharply with a white belly and undertail coverts. The upperwing coverts can show a greenish-bronze sheen in good light.

2. 2

   Beak shape

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

   Straight, relatively short and stout for a stork, greenish-grey to olive-brown with a reddish tip, especially during breeding season.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Dark brown eyes.

4. 4

   Leg color

   Leg and foot color.

   Greyish-green to olive-brown legs and feet, often appearing darker.

5. 5

   Distinguishing features

   Standout features that separate this species.

   The most distinctive features are the bare facial skin patches: bright red in front of the eye and blue around the eye, particularly vibrant during the breeding season. These colors are unique among storks. They also have a small red patch on the tibia (upper part of the leg).

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles resemble adults but have duller, browner-black plumage, less glossy. The bare facial skin is less brightly colored, often duller greyish-blue and reddish-brown, and the bill is duller.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   The bare facial skin (red pre-orbital, blue post-orbital) becomes significantly more vibrant and intense during the breeding season. The bill tip also becomes more reddish. Plumage itself does not undergo significant seasonal changes.

8. 8

   Sexual dimorphism

   How males and females differ.

   Males and females are generally monomorphic in plumage, though males tend to be slightly larger than females. Facial skin colors may be more intense in breeding males.

Key field marks

• Size and Overall Plumage. Look for a medium-sized stork (smaller than White or Black Storks) with glossy black upperparts and pure white underparts.
• Facial Skin. The most diagnostic feature: bright red bare skin in front of the eye and blue bare skin around the eye. These colors are particularly vivid during the breeding season.
• Bill and Legs. Observe the greenish-grey to olive-brown bill with a reddish tip, and similarly colored legs. Note the small red patch on the tibia.
• Behavior. Often seen foraging in open grasslands or agricultural fields, frequently in groups. Look for them following fires or farm machinery.
• Flight. Typical stork flight with neck and legs outstretched, soaring on thermals.

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