Distribution code

Throughout this website, distributions are indicated by a code that is based on the following world-map scheme:

 

The distribution of a given bird taxon is indicated by a block of nine boxes, with each box representing a defined region of the word. If a bird taxon does occur in a given region, the box representing that region is filled with the corresponding colour. White boxes indicate that a given bird taxon is not naturally occurring in that part of the world.

 



The system of colour-code boxes is most easily explained by a number of selected examples:

 

Example 1: This typical colour code indicates the distribution of a bird taxon in the Americas.

 

 

Example 2: This typical colour code indicates the worldwide distribution of a bird taxon. 

 

 

Example 3: This typical colour code indicates the disjunct distribution of a bird taxon in South America and Australia. 


Example 4: This deviating colour code indicates the distribution of a taxon that breeds primarily on oceanic islands.

 

 


Example 5: This deviating colour code symbolises the distribution of a migratory taxon breeding in Eurasia and wintering in Africa.