Avian Intro

2. A hornbill's beak is made out of _______.
5. As birds don't have teeth, their food get stored in this organ before getting digested further.
7. Black-casqued hornbills are native to _____.
10. _____ are descendants of the red jungle fowl.
13. There are around ________ breeds of large chickens.
14. When the male and the female look different
18. Birds store food in their ______ after the crop to digest their food further.
19. Hornbills like to nest in tree ______.
20. A type of chicken is called a _____ not a species or sub species.

1. The place the call ducks originate from.
3. sacs Birds don't just have lungs in their respiratory system, they also have ___ ___.
4. Birds often need access to this to help digest their food.
5. Birds have a ____ which is the passageway for eggs and faeces/urea and is the entrance to the reproductive system.
6. The word used for when birds are grooming themselves.
8. This mineral is really important for egg shell production.
9. It takes chickens _____ - one days to hatch when developing in an egg.
11. adults this is called sexual ______.
12. When chickens go _____ it means they have the urge to incubate a clutch of eggs.
15. Most bird species' bones have this structure inside.
16. Most birds lack this sense.
17. the part attached to the top of the hornbill's beak is called the ____.