You can use this optional text area to introduce the birds below. To edit it, click the "Customize page" button at the bottomi, then click the gear icon next to the "Custom" module. If you don't wish to include this intro text on the page, click the trash can button on the "Custom" module's gray bar at the top. 

To change the birds that appear below, press the "Customize page" button then press the gear button above the "Bird cards" module. You can then type the name of the birds you'd like to appear in the fields, add more rows, and customize their display.