Table 1.

Comparison of egg composition for first- and last-laid eggs in female zebra finches laying 4-5 egg clutches

Shell Albumen Yolk
Egg orderDry mass (mg)%Dry mass (mg)%Dry mass (mg)%
First60.0±625.2±2.374.9±1131.4±2.9104.8±2143.4±4.2
Last62.1±524.7±1.884.4±8**33.5±2.4**105.7±1441.8±2.4*
  • Dry mass values are means ± s.d. (N=23); % values are percentage of total egg dry mass.

    Asterisks indicate significant difference: *P<0.05, **P<0.01.