196 POULTRY DISEASES AND THEIR TREATMENT. 



*S>ff) 



Fig. 47. Trachea (windpipe) of 

 a pheasant showing gape 

 worms fSyngaimis frachcalisj 

 attached to the mucous mem- 

 brane. (After Megnin). 



Fig. 48. A pair of 

 Syngamus trache- 



alis, attached. 

 (After Megnin). 



The tAvo sexes are joined together in such a way that a pair 

 looks like a double headed worm. The female is about ^ inch 

 long and the male about 1-5 inch. The worms are pale in color 

 when empty but when they have been feeding they are red with 

 the blood of the chick. The presence of the worms in the tra- 

 chea of a living chick may be demonstrated by passing a gape 

 worm extractor (a loop of horse hair or fine wire or a feather 

 with the vane removed except at the tip) carefully down the 

 trachea for some distance turning it around to loosen the worms 

 and drawing it out. If the worms are present some will be 

 removed with the extractor. 



