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Table 5 Key to attain highest accuracy in age assignment of bee-eater nestlings on a 12-day interval visit schedule

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

Actual age class (during 1st visit)Assigned as (during 1st visit)AccuracyVisit 12 days later
110.93Confirm age estimation with 0.94 accuracy as real class is 13
4Adjust age with 0.94 accuracy as real class is 13
7
440.84Confirm age with 0.99 accuracy as real class is 16
1Adjust age with 0.99 accuracy as real class is 16
7
770.68Confirm age with 0.87 accuracy as real class is 19
1Adjust age with 0.87 accuracy as real class is 19
4
10100.85Confirm age with 0.84 accuracy as real class is 22
4Adjust age with 0.84 accuracy as real class is 22
7
  1. Correction on the second visit following potential misclassifications during the first visit, in accordance with most likely miss-assigned classes from Table 4