Golden Gate Raptor Observatory Publications


GGRO intern Kris Vanesky examines blood cells

To date, the Golden Gate Raptor Observatory (GGRO) has published 26 articles in peer-reviewed scientific journals, contributed to Master's and PhD candidates' research, and given more than 100 presentations at national and international conferences.

We also publish two annual reports, the Season Summary and the Pacific Raptor.

Season Summary (links to PDFs)

    2018     2017     2016
    2015     2014     2013
    2012     2011     2010

Pacific Raptor (links to PDFs)

 PR 39       Fall 2017
 PR 38  Fall 2016
 PR 37  Fall 2015
 PR 36  Fall 2014
 PR 35  Fall 2013
 PR 34  Fall 2012
 PR 33  Fall 2011
 PR 32  Fall 2010
 PR 31  Fall 2009
 PR 30  Fall 2008


Select Publications

Wilson, SB. 2017. The Pacific Flyway—Golden Gate Raptor Observatory. Hawk Migration Studies, 43(1): 46-47

Tomalty, KM, AC Hull, AM Fish, CW Briggs, and JM Hull. 2015. Differential migration and phenology of adult Red-tailed Hawks in California. Journal of Raptor Research, 50: 45-53

Brake, AJ, HC Wilson, R Leong, and AM Fish. 2014. Status of Ospreys nesting on San Francisco Bay. Western Birds, 45(3): 190-198

Jasper, MA, JM Hull, AC Hull, and RNM Sehgal. 2014. Widespread lineage diversity of Leucocytozoon blood parasites in distinct populations of western Red-tailed Hawks. Journal of Ornithology, 155(3): 767-775

Hull, JM, AM Fish, and AC Hull. 2013. Development and field testing of a mechanical lure for use in trapping raptors. Wildlife Society Bulletin, 37(4): 872-876

Hull, JM, SE Pitzer, AM Fish, HB Ernest, and AC Hull. 2012. Differential migration in five raptor species in central coastal California. Journal of Raptor Research, 46(1): 50-56

O’Herron, M. 2012. Counting hawks and winning hearts—a quarter century of citizen science in the GGNRA. Park Science, 29(1): 40-43

Hull, JM, AM Fish, JJ Keane, SR Mori, BN Sacks, and AC Hull. 2010. Estimation of species identification error: implications for raptor migration counts and trend estimation. Journal of Wildlife Management, 74(6): 1326-1334

Ishak, HD, C Loiseau, AC Hull, and RNM Sehgal. 2010. Prevalence of blood parasites in migrating and wintering California hawks. Journal of Raptor Research, 44(3): 215-223

Valkiunas, G, RNM Sehgal, TA Iezhova, and AC Hull. 2010. Identification of Leucocytozoon toddi group (Haemosporida, Leucocytozoidae), with remarks on the species taxonomy of Leucocytozoids.. Journal of Parasitology, 96(1): 170-177

Hull, JM, HB Ernest, JA Harley, AM Fish, and AC Hull. 2009. Differential migration between discrete populations of juvenile Red-tailed Hawks (Buteo jamaicensis). Auk, 126: 389-396

Hull, AC, MG Armer, BJ Sturgeon, and AM Fish. 2008. Featured photo: first documentation of a Eurasian Kestrel in California.. Western Birds, 39: 184-187

Hull, JM, AC Hull, BN Sacks, JP Smith, and HB Ernest. 2008. Landscape characteristics influence morphological and genetic differentiation in a widespread raptor (Buteo jamaicensis). Molecular Ecology, 17: 810-824

Hull, JM, BN Strobel, CW Boal, AC Hull, CR Dykstra, AM Irish, AM Fish, and HB Ernest. 2008. Comparative phylogeography and population genetics within Buteo lineatus reveals evidence of distinct evolutionary lineages. Molecular Phylogenetics and Evolution, 49: 988-996

Pitzer, S, J Hull, HB Ernest, and AC Hull. 2008. Sex determination of three raptor species using morphology and molecular techniques. Journal of Field Ornihology, 79(1): 71-79

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

Sehgal, RNM, AC Hull, NL Anderson, G Valkiunas, MJ Markovets, S Kawamura, and LA Tell. 2006. Evidence for cryptic speciation of Leucocytozoon spp. (Haemossporida, Leucocytozoidae) in diurnal raptors. Journal of Parasitology, 92: 375-379

Hull, JM, 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(1): 159-170

Pyle, P. 2005. Remigial molt patterns in North American Falconiformes as related to age, sex, breeding status, and life-history strategies. Condor, 107: 823-834

Pericoli, RV, and AM Fish. 2004. GGRO’s East Bay Cooper’s Hawk Intensive Nesting Survey—2003. GGRO Report, : 26 pp

Lamberski, N, AC Hull, AM Fish, K Beckmen, and TY Morishita. 2003. A survey of the choanal and cloacal aerobic bacterial flora in free-living and captive Red-tailed Hawks (Buteo jamaicensis) and Cooper’s Hawks (Accipiter cooperii). Journal of Avian Medicine and Surgery, 17(3): 131-135

Lewis, SA, and WR Gould. 1999. Survey effort effects on power to detect trends in raptor migration counts. Wildlife Society Bulletin, 28: 317-329

Hall, LS, AM Fish, and ML Morrison. 1992. The influence of weather on hawk movements in coastal northern California. Wilson Bulletin, 104: 447-461

McDermott, F, & AM Fish. 1991. "How do you know you haven't counted that hawk before?"  Part II. Hawk Migration Studies, 16: 20-21

Smith, JP, SW Hoffman, and JA Gessaman. 1990. Regional size differences among fall-migrant accipiters in North America. Journal of Field Ornithology, 61(2): 192-200

DeLong, RS. 1989. Red-tailed Hawk age ratios at the Golden Gate. Hawk Migration Studies, 15: 17-18, 24

Howell, JA, & SW Shor. 1985. Raptor banding at Point Diablo supplies trapping success data. Park Science, 5: 22-23

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