Species Profile
Blue-naped Mousebird
Urocolius macrourus
Quick Facts
Conservation
LCLeast ConcernLifespan
7–10 years
Length
33–36 cm
Weight
34–65 g
Wingspan
25–30 cm
Migration
Resident
Also known as: Blue-naped Coly
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Appearance
The Blue-naped Mousebird is a slender, long-tailed bird with predominantly grey-brown plumage. Its most distinctive feature is a bright turquoise-blue patch on the nape, contrasting with its otherwise muted colouration. The tail, which makes up about two-thirds of its total length, is graduated and often held vertically.
Both sexes look similar, with a slight crest on the head and crimson-red skin around the eyes. Juveniles resemble adults but lack the blue nape patch and have pinker facial skin.
Identification & Characteristics
Colors
- Primary
- Grey
- Secondary
- Blue
- Beak
- Black
- Legs
- Red
Attributes
Understanding Attributes
Rated 0–100 based on research and observation. A score of 50 is average across all bird species. These attributes are relative and don't necessarily indicate superiority.
Habitat & Distribution
Blue-naped Mousebirds inhabit a range of semi-arid habitats across eastern and northeastern Africa. They are commonly found in savanna woodlands, acacia scrub, and riverine forests. These birds also frequent gardens and cultivated areas with sufficient tree cover.
Their distribution extends from Sudan and Ethiopia southwards to Tanzania and Kenya. While not present in outside Africa, they are popular in zoos and aviaries worldwide.
Distribution
Diet
Blue-naped Mousebirds are primarily herbivorous, feeding on a variety of fruits, berries, leaves, and buds. They show a particular fondness for figs and have been known to cause damage to fruit crops.
Their diet is supplemented with insects, especially during the breeding season when protein requirements are higher.
Behaviour
Blue-naped Mousebirds are highly social, often seen in small groups of 6-20 individuals. They move through vegetation with a mouse-like crawling motion, using their strong feet and stiff tail feathers for support.
These birds are known for their unique ability to hang upside down while feeding, demonstrating remarkable agility in trees and shrubs.
Calls & Sounds
Blue-naped Mousebirds are vocal birds, frequently communicating with soft, high-pitched twittering calls. Their vocalisations include a distinctive 'tseee-tseee-tseee' sound, often given in flight or when perched.
During feeding or social interactions, they produce a variety of chirps and trills, creating a constant chatter within their groups.
Nesting & Breeding
Breeding occurs year-round, with peaks during the rainy seasons. Blue-naped Mousebirds form monogamous pairs and engage in mutual preening as part of their courtship ritual. They construct cup-shaped nests using plant material, often placed in dense foliage for concealment.
Females typically lay 2-4 eggs, which are white with brown speckles. Both parents share incubation duties, which last about 11-12 days. The eggs hatch asynchronously, meaning chicks in the same nest can be at different stages of development.
Nestlings are altricial, born naked and helpless. They fledge after approximately 17-18 days but remain dependent on their parents for several weeks afterwards, often returning to the nest to roost.
Conservation
The Blue-naped Mousebird is currently listed as Least Concern by the IUCN. Its wide distribution and adaptability to various habitats contribute to its stable population.
However, local declines may occur due to habitat loss in some areas, particularly where savanna and woodland are converted for agriculture.
Population
Estimated: Not quantified, but reported to be widespread and common[3]
Trend: Decreasing[2]
Elevation
Up to 2,100 meters
Additional Details
- Predators:
- Main predators include birds of prey such as hawks and falcons, as well as snakes and small carnivorous mammals that can access their nests.
Birdwatching Tips
- Look for small groups moving through trees and shrubs
- Listen for their distinctive, high-pitched twittering calls
- Observe their unique crawling behaviour and acrobatic feeding postures
- Watch for the flash of blue on their napes when they turn their heads
Did You Know?
- Blue-naped Mousebirds can enter a state of torpor to conserve energy during cold nights.
- They have the unique ability to lock their toes in place, allowing them to sleep while hanging upside down.
- These birds play a role in seed dispersal, contributing to the regeneration of their habitat.
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