Our partial albino swift, a male, arrived back on 16th May, five days later than last year and 2011. He arrived with a feather and began nest building immediately. His mate also arrived on this day and they roosted together overnight. Today, 23rd May they have spent alot of time in the nest box feathers puffed up to keep warm. Last night we had sleet and at by dawn there was a frost. Today heavy showers with hail, a tough time for swifts.