Home›Birds›NatureServe Rank›G1 Critically ImperiledBrowse ByG1 Critically ImperiledFactsG1 Critically ImperiledSourcesComments (0)Reader Challenges (0)FactsComparisonReproductive ModeWell-attestedOviparous (Egg-Laying) 1G1 Critically ImperiledFilter Results2 entriesCommon GroupAllBirds Of Prey (Raptors) (1)Other Birds (1)Everyday GroupAllBirds Of Prey (Raptors) (1)Other Birds (1)HabitatAllBoreal Forest (1)Chaparral (1)Freshwater Marsh (1)Where It LivesAllMexico (1)North America (2)Norway (2)United States (1)Conservation StatusAllCritically Endangered (1)Endangered (1)DietAllCarnivore (1)Detritivore or Scavenger (1)System (Realm)AllFreshwater (1)Terrestrial (2)Living or ExtinctAllYes (2)Relationship to PeopleAllHunted or Fished (1)Kept as Pets (1)CITES AppendixAllAppendix I (2)EcosystemAllCalifornia Chaparral (1)Muskeg (1)Siberian Taiga (1)TaxonomyAllAves (1)Gruiformes (1)Show ResultsBrowseCompareSelect all 2California CondorG1 Critically ImperiledWhooping CraneG1 Critically ImperiledSources1. 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.