PARASITES AND ENEMIES OF POULTRY 323 



minutes during the class hour. It should be done in the 

 presence of the class so that they may take notes on the 

 work done and the efficiency of the process. 



Exercise No. 86. — Combating Poultry Enemies. — The 

 class can take part in a general discussion, each one telling 

 of ways and means used at his own home to protect the 

 young chicks and older birds from the ravages of the enemies 

 described in the text. There is rarely a farm which is free 

 from such animals. 



THOUGHT QUESTIONS 



1. What is a parasite? 



2. What is the difference between external and internal parasites? 



3. What is the effect of parasites upon the health of the flock? 



4. What are internal parasites commonly called? 



5. Tell what you can about the round worms of poultry. 



6. How can worms be eradicated? 



7. How do external parasites get their nourishment? 



8. Describe the appearance of body lice. 



9. How can poultry be kept free from body lice? 



10. What is the appearance of red mites? 



11. Describe the habits of red mites. 



12. How can red mites be successfully combated? 



13. How can you tell when the flock is affected by depluming mites? 



14. How would you proceed to eradicate depluming mites? 



15. What is the appearance of a bird affected with scaly leg mites? 



16. Describe the best method of ridding birds of scaly leg mites. 



17. WTiat is meant by poultry enemies? 



18. What damage do rats do to poultry? 



19. How can a poultry plant best be protected from the ravages of rats? 



20. Tell what you can about the damage which may be done by weasels, 



minks, and skunks. 



21. How do hawks and crows destroy poultry? 



22. How can you best protect a plant from theft? 



References. — United States Farmers' BuUetins: 369, How to 

 Destroy Rats; 444, Remedies and Preventatives against Mosquitoes. 



