Published in HBW Volume 11 on page 562.
Original HBW caption:
Around 45% of sylviids are migratory in at least one part of their range. In particular, most species occurring in temperate regions travel towards the tropics in the non-breeding season: those breeding in Europe and west Asia usually winter in Africa; those breeding in east Asia usually winter in south Asia and the Malay Archipelago. The Common Whitethroat is a classic long-distance migrant, travelling annually from its European breeding grounds to its wintering grounds in sub-Saharan Africa. This individual, photographed on a date palm in Oman, is pausing to refuel on the journey.