# Distribution map
This demo visualizes the breeding and the wintering range of the Rusty Blackbird on an interactive map chart. Notice the irregularity of the data; this is possible thanks to how Highmaps allow you to layer any data on top of any map using a custom map process.
#### Tip
Learn more about how to create custom maps [here](https://www.highcharts.com/docs/maps/custom-maps).