 Back at Montevideo, Darwin was introduced to Conrad Martens, the replacement artist brought on board "Beagle" after Augustus Earle had to leave due to health problems.They sailed south, putting in at Port Desire on 23 December, and the following day Darwin shot a guanaco which provided them with a Christmas meal.Early in the new year, Martens shot a rhea which they enjoyed eating before Darwin realised that this was the elusive smaller rhea, and preserved the remains.