Barred Forest-Falcon

Overview

The Barred Forest-Falcon (Micrastur ruficollis) is a compact, forest-interior raptor 31–39 cm long, built more like a large accipiter than a typical falcon. Adults are dark slate-gray above with white underparts crossed by fine black bars. The tail shows 3–6 narrow white bands, and the pale yellow eyes and cere are striking at close range. Some individuals show a rufous-brown morph rather than gray upperparts. It is part of the Micrastur lineage — a neotropical genus of forest-falcons that evolved independently from open-country falcons and show convergent traits with accipiters: long tails, rounded wings, and a preference for hunting in dense cover.

Its hunting strategy is sit-and-wait ambush: the bird perches silently on a branch within the understory, often low to the ground, then launches a short, fast pursuit when prey — lizards, small birds, frogs, or rodents — reveals itself. Like other forest-falcons, it can also use a “kiting” technique, calling loudly to flush prey.

Why Tortuguero

In Tortuguero, the Barred Forest-Falcon is a signal of mature forest. In Central America it is largely restricted to primary lowland forest with intact understory structure — habitat that is well-preserved inside the park but degraded or absent in surrounding agricultural land. The species is frequently encountered at dawn along the Jaguar Trail and other interior paths, where its distinctive call — a rapid, rising kee-kee-kee or slower kew-kew series — carries through the trees before visibility improves. Population estimates globally exceed 500,000 mature individuals, but the trend is decreasing as primary forest contracts across its range.

How to see them (honestly)

• Dawn is the best window; the call is loud and diagnostic — learn it before the trip
• Move slowly along interior forest trails; the bird often stays motionless until you are close, then flushes low and fast
• Look for the horizontal perch posture at or below eye level on a shaded branch
• Do not expect a clear perched view; the species vanishes into cover quickly when disturbed
• Camera traps set along fallen logs in the park’s interior have produced records during research programs

Status note

The IUCN lists the Barred Forest-Falcon as Least Concern, but its global population is considered to be in decline. In Central America the species is closely tied to primary forest and disappears from areas converted to agriculture or plantations. Tortuguero’s protected status makes it one of the more reliable places in Costa Rica’s Caribbean lowlands to encounter this bird. The park’s role in maintaining mature forest is directly connected to the species’ continued presence.