Nestled amidst the lush rainforests of Costa Rica’s eastern slopes, a tiny bird with a vibrant splash of color flits through the foliage. This is the Rufous-rumped Antwren, a captivating creature that adds a touch of the extraordinary to the already breathtaking mountain scenery.

A Jewel of the Highlands:

The Rufous-rumped Antwren is a small, slender bird, typically measuring around 11 cm in length. Its most striking feature is undoubtedly the namesake rufous-colored rump, which, while vibrant, can sometimes be hidden by the folded wings. However, the male’s contrasting black cap and gray head set against a yellow belly and olive back make it a distinctive sight. Females, though similar, lack the black cap and sport a slightly duller overall plumage.

High-Flying Companions:

These active birds are most often seen foraging in the canopy of mature forests, often in the company of mixed-species flocks. Their long tails and energetic movements help distinguish them from other yellow-bellied antwrens found in the region.

A Rare Glimpse:

The Rufous-rumped Antwren has a somewhat disjunct distribution, with the northernmost population found on the eastern slopes of Costa Rica’s Cordillera de Talamanca. While not as common as some other antwren species, it can be spotted by keen-eyed birders in suitable high-altitude forest habitats.

Where to Find Them:

While the Rufous-rumped Antwren is primarily associated with the mountainous regions of Costa Rica, particularly the Cordillera de Talamanca, there have been occasional sightings in other areas like Braulio Carrillo National Park.

A Treasure of the Cloud Forest:

The next time you venture into the misty embrace of Costa Rica’s cloud forests, keep an eye out for the Rufous-rumped Antwren. This tiny bird, with its vibrant flash of color, is a true gem of the highlands, adding a touch of avian magic to your mountain adventures.

Tips for Spotting the Rufous-rumped Antwren:

• Listen for their calls: These birds have a distinctive, high-pitched “tsee-tsee” call that can help you locate them in the dense foliage.
• Join a guided birdwatching tour: Experienced guides know the best birding spots and can help you increase your chances of spotting this elusive species.
• Be patient and observant: These active birds can be challenging to spot, so patience and a keen eye are essential.

With a little effort and a dose of birding enthusiasm, you might just be rewarded with a glimpse of this captivating creature, a reminder of the hidden wonders that await discovery in Costa Rica’s verdant mountains.

For more information, please view our comprehensive guide about the birds of Costa Rica

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