Here at our Costa Rican mountain retreat, nestled amidst the lush rainforest canopy, we’re fortunate to be surrounded by a vibrant symphony of birdsong. But during the fall months, a particularly fascinating visitor graces our trees – the Blackpoll Warbler. This tiny songbird, no bigger than a ballpoint pen, undertakes an epic journey that lands it right here in our mountain haven for a brief stopover.

The Blackpoll Warbler is a champion of long-distance migration. Breeding in the boreal forests of Canada and Alaska, these little marvels embark on a southward trek come fall. But their route isn’t your typical hop-and-skip over land. The Blackpoll Warbler holds the record for the longest overwater flight of any songbird. Buckle up, because this gets incredible: they make a nonstop journey of up to 1,800 miles (2,897 kilometers) across the Atlantic Ocean, from the east coast of North America all the way to their wintering grounds in Puerto Rico, the Lesser Antilles, and northern South America. That’s three whole days of flying over open water, navigating by the stars and the earth’s magnetic field!

Imagine the immense physical feat this represents. To prepare for this marathon flight, Blackpoll Warblers double their body weight by gorging on insects before departure. During migration, they fly at high altitudes, taking advantage of strong tailwinds to conserve energy.

Spotting a Blackpoll Warbler at our retreat is a treat. While they’re not permanent residents, they often take a well-deserved rest in our mountain forests during their fall migration.

Here’s how to identify these remarkable travelers:

• Breeding Males: Look for a striking black and white tuxedo. They have a prominent black cap, contrasting with crisp white cheeks and two white wing bars.
• Females and Immatures: During migration, they lose their dramatic black and white plumage. Instead, expect to see a greenish-yellow bird with dark streaking on the back and faint streaks below. Their faces are pale yellow with a dark eyeline.

These little insectivores can be found flitting amongst the leaves and branches, especially in the taller trees. Their high-pitched song, described as thin and buzzy, might require a keen ear to detect. But if you’re patient and observant, you might just be rewarded with a glimpse of this incredible avian athlete.

The Blackpoll Warbler’s presence at our retreat is a reminder of the interconnectedness of our planet. Their long-distance migration highlights the challenges birds face due to habitat loss and climate change. By protecting our rainforests and creating a sustainable environment, we can offer a vital stopover for these magnificent birds on their incredible journeys.

So, keep your eyes peeled during your stay at our mountain retreat. You might just be lucky enough to witness the Blackpoll Warbler, a tiny testament to the wonders of nature and the power of resilience.

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