Egg Measurements: mean ± SD (range, n), (source). Unless noted otherwise, n = number of eggs measured.

  O. o. oenanthe O. o. leucorhoa
Length (mm) 21.0 ± 1.0 (18.7–24.0, 264) (a) 21.8 (34) (f)
  21.3 (19.0-24.8, 100) (b)  
  20.9 ± 1.1 (33 clutch means) (c)  
  20.6 (200) (d)   
Width (mm) 15.8 ± 0.4 (14.9–16.8, 264) 16.0 (34) (f)
  15.9 (14.6-17.0, 100) (b)  
  15.5 ± 0.5 (33 clutch means) (c)  
  15.5 (200) (d)  
Volume (ml) 2.6 (33 clutch means) (c)  
Mass (mm) 2.83 ± 0.2 (2.3-3.2, 92) (a)  
  2.8 (33 clutch means) (c)  
  2.61 (e)  

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