Birds / Ornithology

Dueling Sandhill Cranes at Bernardo, New Mexico 2018

1. **Ornithology Science of Birds - https://ornithology.com/bird-external-anatomy/

2. Avian anatomy and morphology - https://earthlife.net/birds/anatomy.html

3. **Cornell Lab of Ornithology - https://www.allaboutbirds.org/guide/search

4. **National Audubon Society - http://www.audubon.org

5. Marine bird conservation - http://www.birdlife.org/worldwide/programmes/marine

6. Cornell Lab of Ornithology bird anatomy - http://www.all-birds.com/Anatomy.htm

7. Montana field guide birds - http://fieldguide.mt.gov/displayFamily.aspx?class=Aves

8. Sea Bird taxonomy - https://www.thespruce.com/types-of-seabirds-387306

9. Field guide crane behavior - https://www.savingcranes.org/wp-content/uploads/2008/05/Level_4_Field_Guide_2006.pdf

10. International Crane Foundation - https://www.savingcranes.org

11. Field Guide North American Birds https://www.audubon.org/bird-guide