Attributions
Thank you to the creators who uploaded media (CC/public domain) that we used to create these figures.
Figure 1
Images
- Mcnnr3 (Windy Hill, source: Wikipedia, license: CC BY 2.5)
- NPS/Patrick Myers (Mountain Bluebird, source: Flickr, public domain)
- iconixar (Bird icon, source: free with attribution by FlatIcon license)
- TheOtherKev (Crow flying, source: Pixabay, license: free without attribution by Pixabay Content license)
- Freepik (Dove of peace, source: FlatIcon, license: free with attribution by FlatIcon license)
Figure 2
Sounds
Images
- Michael Sander (coins, source: Wikimedia, license: CC BY-SA 4.0)
- Jon Sullivan (waves, source: Wikimedia, public domain)
- Gary L. Clark (yellow-olive flycatcher, source: Wikimedia; license: CC BY-SA 4.0)
- Louise Docker (bee, source: Wikimedia, license: CC BY 2.0)
- Aqua Mechanical (rubbing glass, source: Flickr, license: CC BY 2.0)
- maliciousfairy (tea kettle, source: Flickr, license: CC BY 2.0)
Figure 3
Sounds
Images
Figure 4
See Figure 1
Supplementary Figure 1
Ivan Radic (
cute puppy panting, source: Flickr, license: CC BY 2.0).