Nightjar count at Old Lodge ... July 2nd 2014

link to spreadsheet below

- 7 Nightjars and 4 Tawnys

- second half of walk ( east side) was not very productive, for some reason.  I suspect this is an underestimate of the pairs

- as often happens, a crazy late to bed Woodlark

- In calculating the grid reference I take into account the estimated distance and 'clock' angle from the direction of travel of the observer.  columns H and I record this on the spreadsheet.  So it is attempting to be an accurate position of the bird.  If a second record of the same bird is made the number of birds ( # ) is given as 0.  In principle this allows a form of triangulation, on the assumption that the bird has not moved too much.


martin


click for spreadsheet