https://skullsite.com/apodiformes/
http://www.hiltonpond.org/ThisWeek070115.html
Hummingbird:
http://people.eku.edu/ritchisong/swordbillskel2.jpg
https://prezi.com/mqyrkd1bcpen/skeletal-system-of-hummingbirds/
Ruby-throated hummingbird:
http://www.clemson.edu/science/departments/biosci/research/museum/exhibit8/index.html
Rufous-breasted Hermit:
http://n2t.net/ark:/65665/3e7ed7551-ce32-4e2e-bccd-c916a467999a
Chimeny Swift:
Sternum: https://imgur.com/TScFHEm
Pelvis: https://imgur.com/B5PeeRE
Common Swift:
https://www.flickr.com/photos/galleriejc/8758257196
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