Aythya
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- Skull Identification Key for Central European Waterfowl
- The Troubled Baer's Pochard Aythya Baeri: Cause for a Little Optimism?
- Changes in the Sex Ratio of the Common Pochard Aythya Ferina in Europe and North Africa
- Order Anseriformes: from Check-List of Birds of the World
- Site Investigation Report
- Biodiversity Town of Pound Ridge, NY 2020
- Courtship of the Redhead (Aythya Americana) 1
- GROWTH, WEIGHTS, and PLUMAGES of the REDHEAD, AYTHYA Americahral
- ANSERIFORMES Taxon Advisory Group Regional Collection Plan 3Rd Edition • 2020 - 2025
- Aythya Affinis) in Subarctic Taiga David Lee Trauger Iowa State University
- Of the Anseriformes (Aves: Charadriomorphae)
- Birds List for Carlsbad Caverns Np
- Ring-Necked Duck Aythya Collaris
- Behavioral Isolating Mechanisms in the Family Anatidae
- Eye Color of Female Lesser Scaup in Relation to Age
- Lesser Scaup Aythya Affinis
- A Phylogenetic Analysis of Recent Anseriform Genera Using Morphological Characters
- Redhead in Nottinghamshire: New to Britain and Ireland M