Development of cervical vertebrae of Colaptes campestris at different postnatal stages. A lateral view, days 11–12, B atlas in cranial view, days 27–28, C lateral view, days 27–28. Scale bar: 10 mm (A, C), 2 mm (B).

 
 
  Part of: Lyons S, Rosset SD, Picasso M, Acosta Hospitaleche C (2026) Functional and evolutionary insights from postnatal skull and cervical development in woodpeckers (Aves: Picinae). Vertebrate Zoology 76: 33-49. https://doi.org/10.3897/vz.76.e173317