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- Bird Inventory 2015
- Observation on a Pair of Gray Hawks in Southern Arizona
- The Status of the Gray Hawk in New Mexico
- • the Gila River Valley in Southwestern New Mexico
- News and Reviews
- Birds of Selva Verde Lodge
- Splits, Lumps and Shuffles Alexander C
- Raptor Conservation in Veracruz, Mexico
- Bird Identification Guide: Hawks
- Federal Register/Vol. 83, No. 229/Wednesday, November 28
- Featured Photo: First Record of the Gray
- 31 Subpart C—Addresses PART 11—CIVIL PROCEDURES
- Smithsonian Migratory Bird Center, National Zoological Park, Washington DC 20008
- Conservation Biology of the World's Migratory Raptors: Status and Strategies
- Nmos Bulletin
- Is HARLAN's HAWK a Subspecies of Red-Tailed Hawk?
- Zone-Tailed Hawk (Buteo Albonotatus)
- UNIVERSITY of CALIFORNIA Los Angeles Living For
- Notes First Records of the Short-Tailed Hawk and Gray Hawk for the Baja California Peninsula Steven G
- 2013 San Isidro De Peñas Blancas, Alajuela, Costa Rica Updated in 2016 by Ismael Torres Cordero (29 New Species)
- Belize Wetlands Student-Led Investigation
- Checklist of the Birds of Belize *Complied from Several Sources by Paradise Expeditions
- A Photographic Guide to North American Raptors
- Costa Rica Wings 2017 Completed Checklist
- The Changing Status of the Gray Hawk in New Mexico and Adjacent Areas Sartor O
- Final Environmental Assessment
- Belize Raptor Watch Report
- Luna-Nueva-Bird-Checklist-2019
- Natural History of Birds: Evolution, Classification and Distribution
- Gray Hawk (Buteo Plagiatus)
- Alpha Codes for 2168 Bird Species (And 113 Non-Species Taxa) in Accordance with the 62Nd AOU Supplement (2021), Sorted Alphabetically by English Name
- Chromosomes of Five North American Buteonine Hawks
- Osa Peninsula Bird List