Why some storks are already sitting on their nests - Storks defy late winter as they return to nests across Germany

Storks are returning to their nests across Germany despite the late winter weather. While some have already reached Bavaria and Baden-Württemberg, others remain in Spain or Morocco before completing their journey.

Most storks still migrate south for the winter, with fewer than 10 percent staying in their breeding areas. However, hundreds now spend the cold months in Germany, including around 100 to 150 at a composting site near Ansbach in Bavaria. These birds can survive local winters as long as temperatures don't stay below freezing and food remains available.

Young storks often follow older groups heading to southern Spain or Africa. Those that do migrate tend to return at the same time each year, particularly along the western route. Many try to reclaim the same nest, with early arrivals having the best chance of securing it.

Researchers track their movements using satellite transmitters fitted by organisations like Nabu, the LBV, and bird observatories. This data helps monitor changes in migration patterns, including the growing number of storks that no longer travel as far south as before.

The return of storks follows familiar patterns, though more are now overwintering in Germany than in past decades. Their ability to adapt to milder winters suggests shifting habits, but the majority still rely on long-distance migration to survive the coldest months.