Home›Birds›Lifespan›9.600000Browse By9.600000FactsLifespanSourcesComments (0)Reader Challenges (0)FactsComparisonReproductive ModeWell-attestedOviparous (Egg-Laying) 1Lifespan27.100000Lifespan1 entry27.300000Lifespan2 entries27.400000Lifespan2 entries27.800000Lifespan2 entries28.000000Lifespan2 entries28.200000Lifespan1 entry28.500000Lifespan2 entries28.600000Lifespan1 entry28.800000Lifespan4 entries29.000000Lifespan2 entries29.100000Lifespan1 entry30.000000Lifespan3 entries30.700000Lifespan1 entry30.800000Lifespan1 entry31.000000Lifespan1 entry31.300000Lifespan2 entries31.800000Lifespan1 entry32.000000Lifespan1 entry32.100000Lifespan1 entry32.200000Lifespan1 entry32.800000Lifespan1 entry32.900000Lifespan2 entries33.000000Lifespan2 entries33.200000Lifespan1 entry33.400000Lifespan1 entry33.700000Lifespan1 entry33.800000Lifespan1 entry34.000000Lifespan4 entries34.900000Lifespan1 entry35.000000Lifespan1 entry35.300000Lifespan1 entry35.700000Lifespan1 entry35.800000Lifespan1 entry37.400000Lifespan1 entry37.500000Lifespan1 entry37.800000Lifespan1 entry38.000000Lifespan1 entry38.800000Lifespan1 entry39.000000Lifespan1 entry4.400000Lifespan1 entry4.750000Lifespan1 entry40.000000Lifespan3 entries41.000000Lifespan2 entries41.400000Lifespan1 entry41.600000Lifespan1 entry42.000000Lifespan3 entries42.200000Lifespan1 entry42.800000Lifespan1 entry43.000000Lifespan2 entries43.300000Lifespan1 entryShowing 101 to 150 of 180, page 3 of 4.← Previous1234Next →Sources1. Wikipedia: Birdtier 2WikipediaBird, lead sectionQuote, Bird, lead sectionthe laying of hard-shelled eggsView the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.