Our journey through the incredible avian symphony of Costa Rica takes us today to the realm of the long-beaked fisher, the Large-billed Tern (Phaetusa simplex). While not as commonly spotted at our mountain retreat as some of our resident beauties, this boisterous bird frequents the coasts and waterways throughout the country, making it a worthy addition to our birding repertoire.

A Striking Silhouette:

The Large-billed Tern is a true head-turner. With a wingspan reaching up to 40 inches, it boasts an impressive presence. But it’s the namesake feature that truly steals the show. The long, thick yellow bill is unmistakable, a bright beacon against the tern’s otherwise contrasting plumage. A sleek black cap (during breeding season) sits atop a white body, while the wings showcase a captivating play of three tones: black on the outer edges, transitioning to a pale middle, and culminating in a cool gray inner wing.

A Master of the Hunt:

This aerial maestro isn’t just about looks; it’s a cunning predator. Soaring gracefully over rivers, lakes, estuaries, and even coastal areas, the Large-billed Tern employs a masterful hunting technique. With a keen eye, it spots its prey – fish ranging from 4 to 12 centimeters long – in the water below. Then, in a thrilling display of precision, it hovers momentarily before plunging headfirst to snatch the unsuspecting fish with its formidable bill. But the Large-billed Tern isn’t above a little opportunism. Its diet also includes crustaceans and insects, and it’s known to sometimes resort to kleptoparasitism, stealing food from other birds.

A Voice Like No Other:

The Large-billed Tern isn’t shy when it comes to communication. Its calls are a lively mix of raspy “kews” and sharp “kree” notes, adding to the vibrant soundscape of its wetland habitat.

A Species at Ease:

Thankfully, the Large-billed Tern isn’t classified as threatened. Its population appears stable, and its adaptability to various freshwater and saltwater environments allows it to thrive in many parts of Costa Rica.

Spotting the Large-billed Tern:

While you might not encounter this magnificent bird at our mountain retreat, birding enthusiasts visiting Costa Rica’s coasts, estuaries, and lakes have a good chance of witnessing its aerial mastery. So, keep your eyes peeled for that flash of yellow and black, and listen for the raspy calls that announce the arrival of this unmistakable avian spectacle.

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

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