Black-bellied Whistling Ducks

🔍 Black-bellied Whistling Ducks | Dendrocygna autumnalis

📍 Seen in Cascajal, San José, Costa Rica 🇨🇷

💬 The Black-bellied Whistling-Duck is famously unbothered by humans — it often nests in backyard boxes and urban parks, making it one of the few wild ducks you might spot casually strolling through a suburban neighborhood like it owns the place.


🐾 Fauna Key Data
Black-bellied Whistling-Duck
Dendrocygna autumnalis
// Basic ID
Conservation StatusLCLeast Concern (IUCN)
ColorationChestnut body with a black belly, bright coral-red bill and legs, bold white wing patch visible in flight, and a gray face with a brown cap.
LifespanUp to 10 years in the wild; longer in captivity.
// Size
Length48–53 cm.
Weight652–1,020 g.
Wingspan76–94 cm.
// Habitat & Behavior
Native RangeSouthern United States south through Central America and into northern South America.
Habitat TypeFreshwater wetlands, marshes, flooded fields, ponds, lakes, and tropical lowland forests near water.
DietOmnivore; feeds on seeds, aquatic plants, grains, and small invertebrates.
Activity PatternPrimarily nocturnal feeder; highly gregarious and often seen in large flocks year-round.

Sources: IUCN Red List · Encyclopedia of Life · GBIF · Catalogue of Life

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