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Tomato fruit borer, Helicoverpa armigera (Hubner) (Lepidoptera : Noctuidae) is one of most serious pest of tomato crop grown in Solan area of Himachal Pradesh. Studies were conducted to observe, the effect of Nimbecidine, NeemAzal and role of birds in the suppression of H. armigera larval population in the tomato field. Nimbecidine was sprayed at 0.30 and 0.60 ppm azadirachtin concentrations, whereas Neem Azal was sprayed at 10.00 and 20.00 ppm azadirachtin concentrations. The maximum larval reduction after three sprays recorded at 20.00 ppm concentration of Neem Azal (71.29 %) with higher fruit yield (20.42 kg) and lowest fruit infestation (7.18 %). Birds like Acridotheres tristis, Cissa erythrorhyncha, Copsychus saularis, Corvus macrorhynchos, Dicrurus adsimilis, Parus major, Passer domesticus, Pycnonotus cafer, Pycnonotus leucogenys, Saxicola caprata and Turdoides striatus were found feeding on H. armigera larvae in tomato crop. Pycnonotus cafer and Acridotheres tristis, used the T- shaped perches more frequently than other species. In plots where T- shaped perches were installed, the larval survival was less in comparison to netted and control plots. In netted plots where birds were excluded maximum larval survival (76.78 %) was observed in comparison to control plots (66.53%) where bird had free access to H. armigera larvae. The reduction of 10.25 per cent H. armigera larvae was attributed to the bird predation alone. Due to higher survival of larvae in netted plots less fruit yield (8.83 kg) were recorded in comparison to control plots (11.33 kg).
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