Record numbers of cranes migrate over Switzerland this spring as birds shift traditional flight paths

Swiss ornithologists report record crane sightings this spring as the birds establish new migration routes through the Swiss Central Plateau.

By: AXL Media

Published: Mar 3, 2026, 3:18 PM EST

Source: The information in this article was sourced from Keystone-SDA

Observation of Unprecedented Avian Activity

Ornithologists in Switzerland have documented a significant surge in the number of cranes traveling across the country this spring. Livio Rey, a spokesperson for the Swiss Ornithological Institute Sempach, confirmed to the Keystone-SDA news agency that this scale of migration has never been recorded before during the spring season. Data from the ornitho.ch observation platform indicates that multiple groups consisting of approximately 150 birds were identified in a single day, while other sightings in recent days have exceeded 500 individuals in a single flock.

Seasonal Migration Patterns and Geography

Historically, crane sightings in Switzerland have been far more common during the autumn months rather than the spring. This disparity is partly attributed to the fact that the global crane population is naturally larger following the conclusion of the breeding season. Furthermore, the physical geography of the Swiss Central Plateau plays a critical role in how these birds navigate the region. The area functions similarly to a funnel, where the wide opening typically captures birds during their autumn journey, while the narrower end in the spring often leads them to fly around the country instead of through it.

Evolution of Swiss Transit Routes

The emergence of Switzerland as a major transit country for cranes is a relatively recent development in avian biology. Until a few years ago, the crane was considered a rare guest within Swiss borders because the country did not sit on the traditional main migration corridors. These established routes typically connect Scandinavia and northeast Europe to Spain, or lead from Finland through Italy toward North Africa. However, researchers noted a decisive shift in these patterns starting in 2011 when a portion of the population began to deviate from their historical paths.