Lund-forskere kortlægger nattergalens krydsning af Sahara

22. april 2026

Rapporteret af AI

En nattergal, der kun vejer 25 gram, opbygger energireserver til at krydse Sahara. Forskere fra Lund har brugt miniaturesensorer til at spore ti fugle på deres træk fra Sverige til det sydøstlige Afrika.

Forskere ved Lunds Universitet har benyttet ny miniaturesensorteknologi til at undersøge, hvordan nattergale håndterer deres lange træk over Middelhavet og Sahara.

Fuglene bringer liv til de svenske somre, men tilbringer primært vinteren i det sydøstlige Afrika. De flyver intenst i fire til fem nætter i træk og hviler sig fuldstændigt i dagtimerne.

I ørkenen kan de ikke tanke op og må overleve på reserver, som er opbygget på forhånd, fortæller professor i biologi Anders Hedenström.

"Disse fugle løber ikke nogen chancer. Hele deres strategi er baseret på at have opladet tilstrækkelig energi, inden de påbegynder de mest ugæstfrie dele af rejsen," udtaler Hedenström i en pressemeddelelse.

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