Exercise 3 solution (sample answer)

Sound 1: "tsee-tsee-tsee", thin and high, from a hedge. Call. Not seen.
Sound 2: "teacher-teacher-teacher" repeated from a treetop. Song. Seen briefly on a high branch.
Sound 3: a sharp "chink" repeated several times. Probably an alarm call. Not seen.

Your mnemonics will differ; there is no right answer. A good record gives the sound, your song-or-call judgement, and whether you saw the bird, so you can later match it against a guide or recording.