- http://birds.cornell.edu
- http://www.bsc-eoc.org/
- https://feederwatch.org/fr/
- https://celebrateurbanbirds.org
- https://nestwatch.org
- https://feederwatch.org
- http://habitat.network
- http://www.birds.cornell.edu/page.aspx?pid=1639
- https://feederwatch.org/learn/tricky-bird-ids/american-tree-sparrow-and-chipping-sparrow/
- https://feederwatch.org/learn/tricky-bird-ids/black-capped-chickadee-and-carolina-chickadee/
- https://feederwatch.org/learn/tricky-bird-ids/purple-finch-house-finch-and-cassins-finch/
- https://feederwatch.org/learn/tricky-bird-ids/common-doves/
- https://feederwatch.org/learn/tricky-bird-ids/downy-woodpecker-and-hairy-woodpecker/
- https://feederwatch.org/learn/tricky-bird-ids/female-rose-breasted-grosbeak-and-female-purple-finch/
- https://feederwatch.org/learn/tricky-bird-ids/coopers-hawk-and-sharp-shinned-hawk/
- http://cams.allaboutbirds.org/channel/38/FeederWatch_Cam/
- https://feederwatch.org/community/participant-photo/rufous-hummingbird-adult-male/
- https://feederwatch.org/community/participant-photo/broad-tailed-hummingbird-adult-male/
- https://feederwatch.org/community/participant-photo/blue-gray-gnatcatcher-13/
- https://feederwatch.org/community/participant-photo/albino-sparrow-2/
- https://feederwatch.org/community/participant-photo/female-black-phoebe/
- https://feederwatch.org/community/participant-photo/black-phoebe-7/
- https://feederwatch.org/community/participant-photo/black-phoebe-6/
- https://feederwatch.org/community/participant-photo/white-fronted-goose/
- https://feederwatch.org/community/participant-photo/young-grospeak/
- https://feederwatch.org/community/participant-photo/pileated-woodpecker-62/
- https://feederwatch.org/community/participant-photo/rose-breasted-grosbeak-25/
- https://feederwatch.org/community/participant-photo/baltimore-oriole-35/
- https://feederwatch.org/blog/2018-2019-birdspotter-grand-prize-winners/
- https://feederwatch.org/blog/an-ode-to-juncos-birdspotter-data-entry-winner/
- https://feederwatch.org/blog/boring-is-beautiful-birdspotter-judges-choice-winner/
- https://feederwatch.org/blog/boring-is-beautiful-birdspotter-peoples-choice-winner/
- https://feederwatch.org/blog/the-unexpected-birdspotter-judges-choice-winner/
- https://feederwatch.org/blog/the-unexpected-birdspotter-peoples-choice-winner/
- http://www.bsc-eoc.org/volunteer.jsp
- http://www.birds.cornell.edu/citsci/
- http://www.birdsleuth.org
- http://www.birdsource.org/gbbc/
- http://www.bsc-eoc.org/support/index.jsp?targetpg=membership
- https://www.facebook.com/birdscanada
- http://www.bsc-eoc.org/organization/bscnews.html
- https://www.allaboutbirds.org/
- https://join.birds.cornell.edu/ea-action/action?ea.client.id=1806&ea.campaign.id=49066&ea.tracking.id=PFW
- https://www.facebook.com/cornellbirds
- https://give.birds.cornell.edu/page/16228/donate/1?ea.tracking.id=RW
- https://give.birds.cornell.edu/page/13055/donate/1?ea.tracking.id=PFW
- http://www.bsc-eoc.org/support/index.jsp?lang=EN
- http://birds.cornell.edu/page.aspx?pid=1747
- https://www.facebook.com/pages/Project-FeederWatch/121383631249053
- https://twitter.com/Feederwatch
- http://www.birds.cornell.edu/Page.aspx?pid=1635
- http://www.birds.cornell.edu/Page.aspx?pid=1636
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