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Table 4 Percentage of images showing nestlings from a given age class that were correctly estimated (sensitivity; center) and over- and under-estimated (right and left, respectively) by one or two age classes

From: Developing and validating a nestling photographic aging guide for cavity-nesting birds: an example with the European Bee-eater (Merops apiaster)

ClassUnder-estimated by (%)Correctly estimated (%)Over-estimated by (%)
2112
188.99 (16)5.66 (1)5.66 (1)
4016.77 (3)77.88 (14)5.66 (1)0
75.66 (1)55.66 (10)38.99 (7)00
1022.22 (4)5.66 (1)72.22 (13)00
1305.66 (1)88.99 (16)5.66 (1)0
1600100.00 (18)00
19011.11 (2)77.88 (14)11.11 (2)0
22027.88 (5)72.22 (13)00
25016.77 (3)55.66 (10)27.88 (5)0
285.66 (1)38.99 (7)55.66 (10)
  1. Number of answers is presented in parenthesis