Why some storks are already sitting on their nests - White storks return to Germany as warming winters reshape migration habits

White storks are making their way back to Germany, despite the late winter cold. Some have already reached Bavaria and Baden-Württemberg, while others remain in Spain or Morocco. Their return follows familiar patterns, with many birds aiming to reclaim the same nests as in previous years.

Most storks still migrate south for the winter, but fewer than 10 percent now stay in their breeding areas. Hundreds, however, have adapted to milder conditions and remain in Germany—particularly in Bavaria, where 100 to 150 were recently spotted at a composting site near Ansbach.

Global warming plays a key role in this shift. Warmer winters mean more food is available in Central Europe, reducing the need for long migrations. Urban areas also provide reliable food sources, encouraging some populations to shorten their journeys or skip them entirely.

Juvenile storks, though, almost always migrate. They join older birds heading to southern Spain or Africa, learning the routes as they go. For those that do return early, securing a nest is easier—the first arrivals have the best chance of finding their old spot empty.

Researchers track the birds using satellite transmitters fitted by groups like Nabu, the LBV, and bird observatories. This data shows that the timing of this year's return matches recent trends, especially for storks taking the western migration route.

The storks' return highlights changing migration habits. While most still travel south, more are staying in Germany through winter. Their ability to adapt depends on food supplies and temperatures—not dropping too far below freezing for too long.