Birds damage on crops - results from a national survey.
Depredations d'oiseaux sur grandes cultures: resultats d'une enquete nationale.
Robin, N.; Ballanger, Y.; Robert, C.
ARVALIS, Institut du végétal, 64121 Montardon, France.
Les Cochenilles: ravageur principal ou secondaire. 9ème Conférence Internationale sur les Ravageurs en Agriculture, SupAgro, Montpellier, France, 25-27 octobre 2011 2011 pp. 526-536
Association Française de Protection des Plantes (AFPP), Alfortville, France
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A national survey was conducted to characterize the birds damage on crops during the 2009 campaign. Around 2750 farmers reported nearly 4400 cases of damaged cultures, indicating their powerlessness in view of these increasing attacks. The damage is mainly due to crows (rook, carrion crow), then to pigeons (wood pigeon, feral rock dove) and starlings, with varying intensities between areas and crops. The categories of birds and the attacked stages vary greatly from one culture to another: crows on seeds and seedlings of maize, pigeons and crows on seeds and at maturity stage of sunflower and proteins cultures. Damage occurring just after sowing (maize and sunflower) often leads to sow again (partial sowing), which penalizes harvest and farmer's income.