Estimation of maize damage caused by Corvus corone sardonius in Sheben Al- kom Menofiya governorate

            This work was done over two years (2009, 2010) to detect the adverse effects of crows on maize and study their abundance in maize cultivated area. I choose ten Fadden planted with maize. Out of those, I used thirty plants of random out of ten rows at various locations. I counted total number of corn ears on those plants, and determined total number of damaged ears to calculate percentage of damage and recorded. Furthermore, I counted number of crows and their nests. Nests dimensions and contents were determined.
        The results reflect the extent of crow's damage to reach 3.01% up to 3.16 % in the studied fields. Nests are presented in highest trees. They consisted of thick branches, leaves and paper and lined with soft materials.
       Nests have length ranging from 18 to 30 cm. whereas their width appeared to be 32.5 cm as a mean
       Moreover numbers of crows are different according to various months and year. It is appeared to be 33.10, 30.00, 36.45 in May, June, and July in 2009 year respectively.
       However they appeared to be 17.05, 10.65, 14.90 in May, June, and July respectively in year 2010.