Fiy movement is apparently random (Schoof and Siverly, 1 95^a) , 

 especially when winds are variable (Pickens et ai., 1367). Flies 

 tended to disperse upwind when a steady 3-3 to 11.7 kph wind was 

 blowing and dispersal rate increased when temperatures were 11.7 C or 

 above (Pickens et al., 1967). A house fly apparently spends most of 

 its life going from site to site (Schoof and Siverly, 135^a). In the 

 study by Pickens et al. (1967), flies traveled 0.8 km past a clean 

 farm to reach a dirty farm. 

 Nocturnal resting places of adults 



Since the advent of contact residual pesticides, detecting and 

 then treating house fly nocturnal resting places had been advocated as 

 a method of control (Scudder, 1 9^3 ) • Kilpatrick and Quarterman (1952) 

 found that flies congregate at dusk in large numbers and stay in the 

 same place ail night. In hot weather they rest outside en vegetation, 

 but in cooler weather they rest inside structures (Oidroyd, 1965). 

 Nocturnal resting sites cf house flies are usually within 6.1 m of a 

 favored daytime feeding and Dreeding area and are usually above the 

 ground, but rarely higher than 4.6 m (Scudder, 19^+9). Anderson and 

 Pocrbaugh (1964a) found that on a test poultry farm 85% of the house 

 fly population rested inside the poultry houses at night. 

 Methods for Larval Control in Poultry Houses 

 Manure management in dry systems 



An average size hen produces from 90.9 g (Hart, 1963) to 168.2 g 

 of wet manure daily (Winter and Funk, 13^*1 }. Fresh manure is approxi- 

 mately 70% moisture (Card and Nesheim, 1975; Hart, 1363) and has a pH 

 of about 6 that rises to between 7 and 8 after about 1 2 hr due to 



