Assertion: great auk's egg | /r/AtLocation | contact
Facets:
value: with substrate
type: OTHER
value: with the brood patch
type: OTHER
Source sentences:
text: The observed differences in eggshell thickness may be a consequence of the Great Auk (1) laying an elongate egg, which as a result was weaker along its long axis; (2) laying an absolutely larger egg; (3) being up to five times heavier than a guillemot or Razorbill egg and hence increasing the weight the egg has to support during incubation; and (4) potentially incubating its egg on a hard surface and therefore requiring reinforcement in the region where the egg is in contact with the brood patch and substrate (Belopol'skii 1957, Uspenski 1958, Birchard & Deeming 2009, Maurer et al. 2012).