Eggshell thickness by part of egg
Detailed Description
Mean eggshell thickness at 5 different equally spaced positions on Forster’s tern eggshells (n = 40). Eggshells studied were thicker at the egg equator than the ‘bottom’ and ‘top’ of the egg.
From:
Peterson, SP, JT Ackerman, MP Herzog, MS Toney, B Cooney and CA Hartman. 2020. Avian eggshell thickness in relation to egg morphometrics, embryonic development, and mercury contamination. Ecology and Evolution. https://doi.org/10.1002/ece3.6570
Sources/Usage
Public Domain.