How to identify the Magnificent Bird-of-paradise

To correctly identify the Magnificent Bird-of-paradise (Cicinnurus magnificus), 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

19-26 cm (excluding tail wires, which can add up to 10 cm)

Wingspan

Approximately 30-35 cm

Weight

50-85 g

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   Adult males are spectacularly colored with an iridescent green crown, a bright yellow mantle, and a dark brown to black back. The breast is iridescent green, transitioning to a dark brown belly with a broad, iridescent green band. The wings are dark brown. The most distinctive features are the two long, bare, sickle-shaped central tail feathers, which are black with a green-blue sheen. Adult females are much more cryptic, with an olive-brown head and upperparts, finely barred buff and brown underparts, and a shorter, straight tail. Juveniles resemble females.

2. 2

   Beak shape

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

   Slender, slightly decurved, and pointed. Black in males, dark horn to blackish in females.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Dark brown

4. 4

   Leg color

   Leg and foot color.

   Bright blue in males, duller blue-grey in females and juveniles.

5. 5

   Distinguishing features

   Standout features that separate this species.

   Males: Iridescent green crown, yellow mantle, iridescent green breast band, and two long, sickle-shaped tail wires. Blue legs. Females: Olive-brown upperparts, barred underparts, and blue-grey legs.

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles of both sexes resemble adult females, with olive-brown upperparts and barred underparts. Young males gradually acquire adult male plumage over several years.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   No significant seasonal plumage changes; plumage is consistent year-round once adult coloration is achieved.

8. 8

   Sexual dimorphism

   How males and females differ.

   Highly sexually dimorphic. Males are brightly colored with elaborate ornamentation, while females are cryptically colored in shades of brown and buff.

Key field marks

• Male Plumage. Look for the striking combination of iridescent green on the crown and breast, bright yellow mantle, and dark brown body. The two long, black, sickle-shaped tail wires are unmistakable.
• Female Plumage. Identify by the overall olive-brown upperparts and finely barred buff and brown underparts. The blue-grey legs are a good clue, distinguishing it from other cryptic forest birds.
• Leg Color. Both sexes have distinctively colored legs: bright blue in males, duller blue-grey in females. This is a useful field mark, especially for females.
• Display Behavior (Males). Listen for the male's harsh calls and watch for its elaborate display on a cleared 'court' on the forest floor, involving fanning its plumage and performing specific movements to attract females.
• Habitat. Confined to the rainforests of New Guinea, typically in hilly or montane areas. If you are in this specific habitat, it increases the likelihood of encountering this species.

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