Worth having a good read of this before you submit any bird news over the next few months....
http://www.rbbp.org.uk/downloads/rbbp_guidelines_reporting_R_B_Birds_to_BIS.pdf
http://www.rbbp.org.uk/downloads/rbbp_guidelines_reporting_R_B_Birds_to_BIS.pdf
Nightingales have declined by 91% in the last 40 years and a fascinating research project was done a few years ago to study their movements - 