The aim of this national census is to collect
annual nest counts of Grey Herons from as many sites as possible in
the United Kingdom. The Heronries Census began in 1928 and is the
longest-running breeding season monitoring scheme in the world.
Volunteer observers make counts of apparently occupied nests at heron
colonies each year. Changes in the numbers of nests, especially over
periods of several years, are a clear measure of the population's
trend. In recent seasons, observers have also counted the nests of
Little Egrets which are now appearing in a number of southern English
heronries.
For
more information, go to
http://www.bto.org/survey/heron.htm
If
you would like to help with heron nest counting, or have any
information on breeding sites or new possible breeding sites, then please contact
