Helicoverpa armigera; HYMENOPTERAN-PARASITES; Campoletis chlorideae; Parasite density; MORTALITY-; Larvae; POPULATION-DENSITY; Reduction by avian predators & hymenopteran parasite; AVIAN-PREDATORS; Predator exclusion study; CULTIVATED-LAND-HABITAT; Wheat; GUJARAT-; Kheda district, Anand, Sadampura village; Avian predators & hymenopteran parasite, larval mortality, wheat field Campoletis chlorideae; LEPIDOPTERAN-HOSTS; Helicoverpa armigera; POPULATION-DENSITY; Wheat field & lepidopteran host; CULTIVATED-LAND-HABITAT; Density & prevalence in lepidopteran host; GUJARAT-; Kheda district, Anand, Sadampura village; Lepidopteran host, prevalence, wheat field Acridotheres ginginianus; Sturnus roseus; INSECT-PREY; Helicoverpa armigera (Lepidoptera); Prey density in wheat field, predator exclusion trial; GUJARAT-; Kheda district, Anand, Sadampura village; Insect prey density, wheat field, predator exclusion study Dicrurus adsimilis; INSECT-PREY; Helicoverpa armigera (Lepidoptera); Prey density in wheat field, predator exclusion trial; FOOD-CAPTURE; Insect prey in wheat field, forays from trees in field border; GUJARAT-; Kheda district, Anand, Sadampura village; Insect prey density, wheat field, predator exclusion study none