Exercise 3 solution (sample answer)

Headings: Date | Start/end time | Place | Weather | Species | Number | Seen or heard | Notes/unknown.

Example entry: 2026-11-01 | 09:00-09:10 | back garden | dry, cloudy | blackbird | 2 | seen | male and female. Small brown bird | 1 | seen | could not name; streaked back, short bill.

Complete? Yes, if you recorded every species you could identify during the ten minutes. A complete list shows which birds were absent as well as present, which is what makes it useful as data. If you only wrote down the interesting birds, mark the list as incomplete.