Figure 3 in Breeding biology of a high altitudinal Aethopyga sunbird in southwestern China

Figure 3. The morphological developments of the nestlings of the Fire-tailed Sunbird. Six morphological traits were included. Body mass was measured in g, and other measurements (lengths of body, bill, tail, tarsus, and wing) were measured in cm. Note that the sample sizes of nestlings measured are not the same in different periods, as some nestlings were depredated or found after being hatched.