{
  "@context": "https://schema.org",
  "@type": "TechArticle",
  "@id": "https://anchorfact.org/kb/kb-2026-00497",
  "headline": "Birds",
  "description": "Birds (class Aves) are feathered, warm-blooded vertebrates descended from theropod dinosaurs. ~11,000 species. Key adaptations: feathers (flight + insulation), hollow bones (lightweight), beak (no teeth, lightweight), highly efficient respiratory system, wings (modified forelimbs). Migration: Arctic Tern — 90,000 km annually (longest migration).",
  "dateCreated": "2026-05-22T14:59:47.832Z",
  "dateModified": "2026-05-22T14:59:47.832Z",
  "author": {
    "@type": "Organization",
    "name": "AnchorFact"
  },
  "publisher": {
    "@type": "Organization",
    "name": "AnchorFact",
    "url": "https://anchorfact.org"
  },
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "anchorfact:confidence": "high",
  "anchorfact:generationMethod": "ai_assisted",
  "citation": []
}