Many thanks to Marcelo de Cruz for the expert guiding around Ushuaia. (birding-in-ushuaia. blogspot.co.uk)
Special thanks to Simon Rowland and the team at Wildfoot Travel (wildfoottravel.com) for facilitating my trip.
David stayed at the Arakur Hotel, Ushuaia arakur.com
Collins Birds of Southern South America and Antarctica – Martín R. de la Peña & Maurice Rumboll