Josh Hull

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Assistant Adjunct Professor,
Department of Animal Science, UC Davis

Division Chief, Recovery Division,
Sacramento Fish and Wildlife Office, US Fish and Wildlife Service

Ecology and Avian Science Graduate Groups


PhD, Ecology, UC Davis, 2007

MA, Biology, Sonoma State University, 2002

BS, Biology, Dominican University of California, 1998

Research Interests

Conservation genetics, avian ecology and migration, and the conservation of rare and endangered plant and animal species.

Research Projects

Population genetics and systematics of North American merlin (Falco columbarius) subspecies

Demographic modeling of great gray owls (Strix nebulosa) in California using passive genetic techniques

Monitoring of great gray owl (Strix nebulosa) habitat using autonomous recording units

Monitoring of California clapper rail (Rallus longirostrus obsoletus) habitat using autonomous recording units

Development of morphometric key to accurately sex white-tailed hawks

Population genetics of red-shouldered (Buteo lineatus) hawks in eastern North America


J Hull, S Pitzer, A Fish, H Ernest, A Hull. 2012. Differential migration patterns for five raptor species in central Coastal California. Journal of Raptor Research.

Bollmer J, J Hull, H Ernest, J Sarasola, P Parker. 2011. Reduced adaptive and neutral variation in the Galápagos Hawk, an island endemic. BMC Evolutionary Biology, 11, 143. doi:10.1186/1471-2148-11-143.

Hull J, D Mindell, S Talbot, E Kay, H Hoekstra, H Ernest. 2010. Population structure and plumage polymorphism: The intraspecific evolutionary relationships of a polymorphic raptor, Buteo jamaicensis harlani. BMC Evolutionary Biology, 10, 224. doi:10.1186/1471-2148-10-224

Hull J, A Fish, J Keane, S Mori, B Sacks, A Hull. 2010. Estimation of species identification error: implications for raptor migration counts and trend estimation. Journal of Wildlife Management, 76, 1326-1334. doi: 10.2193/2009-255.

Hull J, J Keane, W Savage, E Jepsen, S Godwin, J Shafer, R Gerhardt, C Stermer, H Ernest. 2010. Range-wide genetic differentiation among North American great gray owls (Strix nebulosa) reveals a distinct lineage restricted to the Sierra Nevada, California. Molecular Phylogenetics and Evolution, 56, 212-221.

Hull J, J Keane, L Tell, H Ernest. 2010. West Nile virus antibody surveillance in three Sierra Nevada raptors: Spotted Owls, Great Gray Owls, and Northern Goshawks. The Condor, 112, 168-172.

Whiteman N, V Dosanjh, R Palma, J Hull, R Kimball, PC Sánchez, P Parker. 2009. Molecular and morphological divergence in a pair of bird species and their ectoparasites. Journal of Parasitology, 95, 1372-1382.

Brown S, J Hull, D Updike, S Fain, H Ernest. 2009. Black bear population genetics in California: Signatures of population structure, competitive release and historical translocation. Journal of Mammalogy, 90, 1066-1074.

Hull J, H Ernest, J Harley, A Fish, A Hull. 2009. Differential migration between discrete populations of juvenile Red-tailed Hawks (Buteo jamaicensis). Auk, 126, 389-396.

Hull J, B Stroble, C Boal, C Dykstra, A Hull, A Irish, A Fish, H Ernest. 2008. Comparative phylogeography and population genetics within Buteo lineatus reveals evidence of distinct evolutionary lineages. Molecular Phylogenetics and Evolution, 49, 988-996.

Hull J, W Savage, J Bollmer, R Kimball, N Whiteman, P Parker, and H Ernest. 2008. On the origin of the Galápagos hawk: an examination of phenotypic differentiation and mitochondrial paraphyly. Biological Journal of the Linnean Society, 95, 779-789.

Hull J, J Keane, L Tell, and H Ernest. 2008. Development of 37 microsatellite loci for Great Gray Owls (Strix nebulosa) with cross amplification in Spotted Owls (Strix occidentalis) and Barred Owls (Strix varia). Conservation Genetics, 9, 1357-1361.

Hull J, R Anderson, M Bradbury, J Estep, and H Ernest. 2008. Population structure and genetic diversity in Swainson’s Hawks (Buteo swainsoni): implications for conservation. Conservation Genetics, 9, 305-316.

Hull J, A Hull, B Sacks, J Smith, and H Ernest. 2008. Landscape characteristics influence morphological and genetic differentiation in a widespread raptor (Buteo jamaicensis). Molecular Ecology, 17, 810-824.

Pitzer S, J Hull, H Ernest, and A Hull. 2008. Sex determination of three raptor species using morphology and molecular techniques. Journal of Field Ornithology, 79, 71-79.

Hull J, W Savage, J Smith, N Murphy, L Cullen, A Hutchins and H Ernest. 2007. Further evidence of hybridization in Buteo: Swainson’s Hawks (Buteo swainsoni) × Red-tailed Hawks (B. jamaicensis) from Alberta and Utah. The Wilson Journal of Ornithology, 119, 579-584.

Hull J, D Tufts, JR Topinka, B May, and HB Ernest. 2007. Development of 19 microsatellite loci for Swainson’s Hawks (Buteo swainsoni) and other Buteos. Molecular Ecology Notes, 7, 346-349.

Hull J, A Hull, W Reisen, Y Fang, and HB Ernest. 2006. Variation of West Nile Virus antibody prevalence in migrating and wintering hawks in central California. The Condor, 108, 435-439.

Hull J and DJ Girman. 2005. Effects of Holocene climate change on the historical demography of migrating Sharp-shinned Hawks (Accipiter striatus velox) in North America. Molecular Ecology, 14, 159-170.