28695_1.jpg:
Photographer/User: Rudolphous
License: CC BY 2.0
License URL: https://creativecommons.org/licenses/by/2.0
Credit: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/dhobern/41212501051/">Falco tinnunculus</a>

28695_2.jpg:
Photographer/User: Michael Gäbler
License: CC BY 3.0
License URL: https://creativecommons.org/licenses/by/3.0
Credit: <span class="int-own-work" lang="en">Own work</span>

28695_3.jpg:
Photographer/User: Biopics
License: CC BY-SA 4.0
License URL: https://creativecommons.org/licenses/by-sa/4.0
Credit: <span class="int-own-work" lang="en">Own work</span>

28695_4.jpg:
Photographer/User: HuskyBot
License: Public domain
License URL: Unknown
Credit: This digital media file - and/or the physical objects depicted on it - originates from the digital and/or physical collections of the <a rel="nofollow" class="external text" href="https://www.kb.nl/">Koninklijke Bibliotheek</a>, national library of the Netherlands.

28695_5.jpg:
Photographer/User: HuskyBot
License: Public domain
License URL: Unknown
Credit: This digital media file - and/or the physical objects depicted on it - originates from the digital and/or physical collections of the <a rel="nofollow" class="external text" href="https://www.kb.nl/">Koninklijke Bibliotheek</a>, national library of the Netherlands.