Measurements (linear in mm, mass in g) of the subspecies of the Chihuahuan Meadowlark. Measurements taken by Wesley E. Lanyon from specimens in the American Museum of Natural History and the National Museum of Natural History, except as specified below. Data show as mean (SE, range, n).

  Wing (mm) (1) Tail (mm) Tarsus (mm) Bill (mm) (2) Mass (g)
S. l. lilianae          
Females 110.7 (1.34, 105–115, 7) 67.0 (1.05, 64–69, 5) 38.9 (0.39, 37–40, 9) 21.2 (0.70, 19.8–23.1, 5) 90.3 (1.45, 86.0–94.2, 5)
Males 120.6 (0.53, 116–125, 20) 71.8 (0.84, 69–75, 10) 40.4 (0.33, 37–42, 20) 22.6 (0.49, 20.9–26.0, 10) 112.4 (3.36, 104–131, 7)
S. l. auropectoralis (3)          
Females 105.5 (0.6 (*), 99–110, 19) 66.0 (0.6, 63–70, 17) 37.1 (0.65, 33.6–40.2, 8) 19.2 (0.2, 18.0–20.9, 20) 86.0 (2.4, 77.0–93.7, 6)
Males 114.5 (0.5 (*), 109–123, 31) 71.3 (0.4, 66–76, 31) 39.5 (0.31, 38.1–42.4, 13) 21.6 (0.3, 18.1–25.4, 29) 107.4 (4.3, 98.4–118.2, 4)