Maintenance: On Thursday, June 28 2018, 18:00-18:15, maintenance work on the ZORA servers is scheduled. ZORA will not be available during this period. Thank you for your patience.
Mitgutsch, C; Wimmer, C; Sánchez-Villagra, M R; Hahnloser, R H R; Schneider, R A (2011). Timing of ossification in duck, quail, and zebra finch: intraspecific variation, heterochronies, and life history evolution. Zoological science, 28:491-500.