DIERMAN J (1991) Current research: A study of Sparrowhawks Accipiter nisus. LIMOSA 64 (2): 74-75.

The hawk population in Western Europe experienced a tragic lows in the fifties and sixties as a result of high mortality due to ingestion of pesticides aldrin and dieldrin, DDT while reproduction hampered by breakage of eggshells and embryonic deaths. in the Netherlands joined in 1975 following a ban on slow recovery those funds. The Sparrowhawk is a numerous breeding in the Netherlands. In eastern Ontario in 1981 I started a population study of Sparrowhawks in a research area 350 km2. The area had just a few large land consolidation undergone so Stonechat, Turtle Dove, Meadow Pipit and Skylark largely to breeding birds of agricultural land disappeared. It is a sparsely woodland (13% forest), with predominantly poor, young coniferous forests on wet, loamy soil. The bird population lacking in general the types of mature (deciduous) forest, zoa1s Owl, Glanskop, Nuthatch and Hawfinch. The wet poplar forests house a broekbos company with such rich bird Woodcock, Nightingale, Grasshopper Warbler and Golden Oriole. Sparrowhawks Accipiter nisus

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