Pictures and sounds taken on the license free Commons from the following sources:
Pictures:
Laysan albatross
http://upload.wikimedia.org/wikipedia/commons/a/a5/Laysan_Albatross_RWD5.jpg
Grey heron
http://upload.wikimedia.org/wikipedia/commons/9/96/2013.08.04.-20-Ladenburg-Graureiher.jpg
Flamingo
http://upload.wikimedia.org/wikipedia/commons/f/f7/Chilean_Flamingo_036.jpg
Hummingbird
http://upload.wikimedia.org/wikipedia/commons/d/db/Colibri-thalassinus-001-edit.jpg
Cuckoo
http://upload.wikimedia.org/wikipedia/commons/e/e0/Senegal_Coucal_-Centropus_senegalensis_-on_tree.jpg
Gull
http://upload.wikimedia.org/wikipedia/commons/1/12/Larus_novaehollandiae_-_Austin%27s_Ferry.jpg
Robin
http://upload.wikimedia.org/wikipedia/commons/e/e5/Hungry_Robin.jpg
Tit
http://upload.wikimedia.org/wikipedia/commons/f/fb/Great-Tit.jpg
Lark
http://upload.wikimedia.org/wikipedia/commons/f/f6/Skylark_2%2C_Lake_District%2C_England_-_June_2009.jpg
Toucan
http://upload.wikimedia.org/wikipedia/commons/6/69/Toucan2007.jpg
Sparrow
http://upload.wikimedia.org/wikipedia/commons/b/b1/Passer_hispaniolensis_-Canary_Islands%2C_Spain_-female-8.jpg
Canary
http://upload.wikimedia.org/wikipedia/commons/7/75/Yellow-fronted_Canary_RWD4.jpg
Blue-and-yellow Macaw
http://commons.wikimedia.org/wiki/File:Ara_ararauna_-Jurong_BirdPark-8a.jpg
Eagle
http://commons.wikimedia.org/wiki/File:Bald_Eagle_Head_2_(6021915997).jpg
Woodpecker
http://www.geograph.org.uk/more.php?id=2685605
Kestrel
http://upload.wikimedia.org/wikipedia/commons/1/1e/American_Kestrel_%26_Prey_Feather.jpg
Owl
http://upload.wikimedia.org/wikipedia/commons/6/6a/Great-horned_Owl_RWD_at_CRC1.jpg
Crow
http://upload.wikimedia.org/wikipedia/commons/f/fd/American_Crow_SanDiego_RWD.jpg
Kingfisher
http://www.geograph.org.uk/more.php?id=2480838
Pheasant
http://commons.wikimedia.org/wiki/File:Pheasant.jpg
Nightingale
https://www.flickr.com/photos/insecta62/506001742/in/photostream/
Sounds:
Laysan albatross
http://www.freesound.org/people/GaryEdstrom/sounds/163502/
Grey heron
http://www.freesound.org/people/dobroide/sounds/65264/
Flamingo
http://www.freesound.org/people/UanGuz/sounds/92485/
Hummingbird
http://www.freesound.org/people/Flemur/sounds/103306/
Cuckoo
http://www.freesound.org/people/inchadney/sounds/121203/
Gull
http://www.freesound.org/people/soundmary/sounds/194947/
Robin
http://www.freesound.org/people/reinsamba/sounds/32479/
Tit
http://www.freesound.org/people/inchadney/sounds/53702/
Lark
http://www.freesound.org/people/HerbertBoland/sounds/28139/
Toucan
http://www.freesound.org/people/soundbytez/sounds/110987/
Sparrow
http://www.freesound.org/people/Robinhood76/sounds/67030/
Eagle
https://www.freesound.org/people/Benmaessound/sounds/201059/
Canary
https://www.freesound.org/people/ReadeOnly/sounds/85404/
Blue-and-yellow Macaw
https://www.freesound.org/people/1pjladd2/sounds/128071/
Woodpecker
https://www.freesound.org/people/DjangoAltona/sounds/102972/
Kestrel
https://www.freesound.org/people/dobroide/sounds/17507/
Owl
https://www.freesound.org/people/sean.townsend/sounds/202917/
Crow
https://www.freesound.org/people/pepv/sounds/188287/
Kingfisher
https://www.freesound.org/people/soundbytez/sounds/114450/
Pheasant
https://www.freesound.org/people/clt008/sounds/169185/
Nightingale
https://www.freesound.org/people/reinsamba/sounds/14854/
