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Best Urdaibai Biosphere Tours & Trips

Home to roughly 615 different species of plants and 318 species of animals, the Urdaibai Biosphere is a UNESCO protected ecosystem on the Bay of Biscay in Spain. The estuary, the heart of the biosphere, is one of the most important wetlands on the Iberian Peninsula for the diverse wildlife. The surrounding mountains are composed primarily of limestone and feature a variety of caverns across its surface. The area has been host to human settlers since prehistoric times, most notably in the Santimamine cave, where prehistoric cave murals and remains were found of multiple cultures.

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FAQs about Urdaibai Biosphere Tours

What is the best time of year to visit Urdaibai Biosphere Reserve for hiking and birdwatching?

The best time to visit Urdaibai Biosphere Reserve for hiking and birdwatching is from March to June and September to October. These months offer mild weather, fewer crowds, and optimal birdwatching conditions during spring and autumn migrations. The reserve hosts over 270 bird species, especially around the Urdaibai Bird Center in Gautegiz Arteaga.

How do I get to Urdaibai Biosphere Reserve from Bilbao Airport?

Urdaibai Biosphere Reserve is approximately 40 km east of Bilbao Airport (BIO). Renting a car is the most convenient option, taking about 40 minutes via the BI-632 and N-634 roads. Alternatively, take a bus from Bilbao’s Termibus station to Bermeo or Gernika, with connecting local transport into the reserve.

Are there any entrance fees or permits required to visit Urdaibai Biosphere Reserve?

There are no entrance fees or permits required to visit Urdaibai Biosphere Reserve, as it is an open protected area. However, specific sites within the reserve—such as the Urdaibai Bird Center in Gautegiz Arteaga—may charge a small admission fee, typically under €5, for access to observation areas and guided tours.

Where is the best place in Urdaibai Biosphere Reserve to see wetland bird species year-round?

The best place to see wetland bird species year-round is the Urdaibai Bird Center (Elontza, Gautegiz Arteaga), located near the marshes of Marismas de Alonsotegi. It offers observation points, telescopes, and guided trails. Species like herons, spoonbills, and purple gallinules are regularly spotted, especially during migration seasons.