Bureau Waardenburg
Varkensmarkt 9
4101 CK Culemborg
the Netherlands
T: +31 (0) 345 512710
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Bird Surveys

Photo: Martin Bonte

Knowledge about the birds in an area can be useful in a number of different. situations. Surveys can provide baseline data on the numbers and distribution of birds as well as changes with time. Breeding birds are best monitored using specific breeding bird surveys, whereas a number of methods can be used for surveying non-breeding birds.

The methods used for surveying non-breeding birds depend on the species and area in question. For waterbirds and other species that aggregate in large numbers, counts at roost sites may give an indication of numbers present, whereas broader surveys can provide data on the most important areas for roosting and feeding. It is also important to know how birds move between important areas and Bureau Waardenburg has expertise in surveying how birds use different areas including the use of innovative techniques.

A few example projects are listed below.

  • Between 2004 and 2006 the use of inter-tidal areas along the Westerschelde and Oosterschelde in the Netherlands was studied.
  • Between 1999 and 2001 (and again in winter 2005/06) the distribution of waterbirds in the Veluwemeer and Wolderwijd in the Netherlands was mapped. In addition, the locations of birds were accurately recorded using GIS in order to relate these to the distributions of underwater vegetation and zebra mussels.