KEY

Age Codes

Ringing location

1

pullus (nestling or chick)

1st Autumn (Jun-Oct)

2

fully grown, year of hatching unknown

1st Winter (Nov-Mar)

3

hatched during current calendar year

1st Summer (Apr-Jul)

4

hatched before current calendar year

2nd Autumn (Aug-Oct)

5

hatched during previous calendar year

2nd Winter (Nov-Mar)

6

hatched more than 1 calendar years before

2nd Summer (Apr-Jul)

7

definitely hatched 2 calendar years before

3rd Autumn (Aug-Oct)

8

hatched more than 2 calendar years before

3rd Winter (Nov-Mar)

9

definitely hatched 3 years before

Adult Summer (Apr-Jul)

10

hatched more than 3 calendar years before

Adult Autumn (Aug-Oct)

11

definitely hatched 4 years before

Adult Winter (Nov-Mar)

12

hatched more than 4 calendar years before

Lines are drawn between consecutive records and are the colour of the end record.