The following are all birds of the British Isles. Contestants need to name the birds – as much detail as below is unnecessary. I have underlined the answer I would consider appropriate detail.
1. Common Treecreeper
By Paweł Kuźniar (Jojo_1, Jojo) (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY-SA 2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/2.5-2.0-1.0)], via Wikimedia Commons
2. Eurasian Blue Tit
By Paweł Kuźniar (Jojo_1, Jojo) (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY-SA 2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/2.5-2.0-1.0)], via Wikimedia Commons
3. European Green Woodpecker
By Charlesjsharp (Own work, from Sharp Photography, sharpphotography) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons
4. Grey Wagtail
By Lip Kee Yap (Flickr: Grey wagtail (Motacilla cinerea robusta)) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons
5. Rook
By DickDaniels (http://carolinabirds.org/) (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
6. Double-Crested Cormorant
By Peter Wallack (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
7. Wren
By Robert Lorch [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
8. Tawny Owl
By Chris Paul from England (Tawny Owl – CNP_1299 Uploaded by russavia) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons
9. Common Starling
Ross [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons
10. Mistle Thrush
By Gerard Blokhuis [CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons