Two major reviews of developmental milestones have been published in Pediatrics in Review, an official journal of the American Academy of Pediatrics. Both provide a detailed table of developmental milestones covering ages 1-month to 6-years of age.
The milestones below are referenced from Scharf RJ, Scharp G, Stroustrup A. Developmental Milestones. Pediatr Rev. 2016;37(1):25-37 PMID: 26729779