Penguin

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Across
  1. 2. Related to genetic or blood connections in family." (10 letters)
  2. 4. A young bird developing feathers and learning to fly or swim." (9 letters)
  3. 5. Having two distinct forms or appearances, often in relation to gender." (9 letters)
  4. 6. A public display of objects or animals for people to view." (7 letters)
Down
  1. 1. Unusual or peculiar in an interesting or amusing way." (6 letters)
  2. 3. A strong desire or natural craving, often for food." (9 letters)