From: Harderian gland of flying and non-flying birds: morphological, histological, and histochemical studies
Parameter
Mean ± SD
Minimum
Maximum
Whole length of HG
0.71 ± 0.057
0.60
0.80
Width of HG
0.43 ± 0.082
0.30
Thickness of HG
0.18 ± 0.078
0.10