For each visit, record the date, visit number and start/finish times. Record the bird observations on the accompanying tetrad map for each visit. ALL Willow Tit contacts (including any contacts between playback points) should be marked on the map by using standard BTO (CBC) symbols. A list of the symbols is included at the end of these instructions. Where individual birds are known to have moved within a visit, join their sequential locations with a solid line. On the map from the first visit mark the locations of the first territorial contact as A1, the second as B1, etc; on the second visit map as A2, B2, etc.
Record ALL Willow Tit contacts on the Survey form. Include the relevant territory code, the BTO Atlas Breeding Evidence code(s), whether the contact was located at a playback point and, if so, whether the bird was detected due to its response to playback (although this may not always be clear). If YES, also note the distance to the Willow Tit when first detected and the time taken for the bird to react to the playback. Note if the response to playback was call, song or agitated behaviour. The ‘Breeding Evidence’ codes are described on the Survey form.
On the Survey form, record the date of each visit under ‘visit details’ against the appropriate visit number, even if no Willow Tits were recorded.
After each visit, on the Survey form please complete the ‘summary of observations’ for each territory, giving the appropriate ‘Breeding Evidence’ code (N.B. enter more than one, if necessary) and a summary of the activities under ‘notes’. Also note the number of birds seen. If possible, include details of where birds are seen feeding. If no observations were recorded for a particular territory on a particular visit, please state this by entering ‘nil’ in the ‘Breeding Evidence code’ column.
Record on the tetrad map the approximate locations of any Willow Tits found, using the same territory codes from the Survey form.