For the purposes of this Regulation the following definitions shall apply:

1. 1.

   the definitions laid down in Regulation (EC) No 178/2002;

2. 2.

   the definitions laid down in Directive 2003/99/EC; and

3. 3.

   the following definitions:

   1. (a)

      ‘herd’ means an animal or group of animals kept on a holding as an epidemiological unit; and

   2. (b)

      ‘flock’ means all poultry of the same health status kept on the same premises or in the same enclosure and constituting a single epidemiological unit; in the case of housed poultry, this includes all birds sharing the same airspace.