We recommend searching the Encyclopedia of Life (available via the Mission Maker) for sound clips.
To begin, if you have not uploaded a sound clip, click “Search EOL”. Or, if you already have a sound clip, click the “Actions” button (the yellow button with 3 vertical dots) which is located at the bottom right of every image and sound clip. Then, from the dropdown click “Search EOL”.
When the EOL dialog comes up, enter the keyword for the sound clip you are seeking (e.g. “Robin”) into the Common Name field. In the Media Type dropdown list, select Audio. Click “Search” and you will get a list of search results from EOL. When you have found the audio you want to use, click “Select” to add it to your Challenge.