Winter birds

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Across
  1. 3. Loud, blue bird with crest
  2. 4. Group of birds traveling together
  3. 6. Shiny black plumage, common in winter
  4. 7. Trees where birds find shelter
  5. 9. Down feathers for insulation
  6. 10. Small, brownish bird found near humans
  7. 13. A red-breasted bird often seen in winter
  8. 15. Seasonal travel to warmer places
  9. 17. Where birds rest or watch
  10. 18. Small chickadee-like bird
Down
  1. 1. Seabird often seen in winter coastal areas
  2. 2. Bird of prey often seen soaring
  3. 4. Covering that keeps birds warm
  4. 5. Essential for flight and balance
  5. 8. Winter shelter for bird eggs
  6. 9. Eating behavior to survive cold
  7. 11. Body heat birds conserve
  8. 12. Bright red bird common in snowy areas
  9. 14. A place to offer food to birds
  10. 16. Covering that challenges bird survival