HOEKSTRA B (1961) Garlictoads and Frogs in uileballen. LIMOSA 34 (3): 280-280.

As part of a mammal inventory were along Gelder ~ se IJssel between Zutphen and Wijhe, hundreds of owl pellets collected. A total of 14,444 in this small mammals, 233 ~ vo gels, 13 amphibians and 208 beetles counted. The mom logical results of this study were already published (DLN, 63, 1960). Found the birds, amphibians and beetles were in this statement no specification given. Of two factions to we do in this place, because o, a. the res, to include of a prey species that come into pellets Dutch were found.

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