What are the recording period for winter fieldwork?
Winter fieldwork runs from 1st November to 28th/29th February inclusive. For TTVs, the recording period is divided into an early period in November/December and a late period in January/February. The early winter TTVs must be done by 31st December. If not, then leave till the next winter. Late winter TTVs must be completed by 28/2th Feb, or else the earlier visit will have been wasted.
