Mike Unwin is a writer who specialises in natural history and conservation. Mike's new book tells the stories of 80 birds around the world: from the Sociable Weaver Bird in Namibia which constructs huge, multi-nest 'apartment blocks' in the desert, to the Bar-headed Goose of China, one of the highest-flying migrants which crosses the Himalaya twice a year.

Tailormade team member, George Vincent, recently returned from a 2-week sighting trip, predominantly focusing on the Llanos (Orinoco region) and Magdalena Valley (Andean region), as well as a short visit to Manizales (Central Andes) and the Caribbean coast.

At Naturetrek we craft expertly-guided group and tailor-made wildlife holidays and cruises to all seven continents. On one of our holidays, you can be assured that our passionate team will enable you to experience and enjoy the best of the world's wildlife and natural spectacles in as comfortable and rewarding a manner as possible, caring as best we can for the environment in the process.

In this article, Gary Powell, Amphibian and Reptile Conservation Trust's Senior Reserves Manager explains how ARC and Naturetrek have teamed up to showcase amphibians and reptiles in the UK and beyond.

From the high mountains of the Pyrenees and the Picos de Europa, through the hills and plains of the north, to the grassy steppes of Extremadura and Aragon, and beyond to the hills, coasts and huge wetlands of the south, Spain offers the greatest landscape and biodiversity in western Europe.