Animalia > Chordata > Aves > Accipitriformes > Accipitridae > Buteo > Buteo swainsoni

Buteo swainsoni (Swainson's Hawk)

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Wikipedia Abstract

Swainson's hawk (Buteo swainsoni), is a large Buteo hawk of the Falconiformes, sometimes separated in the Accipitriformes like its relatives. This species was named after William Swainson, a British naturalist. It is colloquially known as the grasshopper hawk or locust hawk, as it is very fond of Acrididae (locusts and grasshoppers) and will voraciously eat these insects whenever they are available.
View Wikipedia Record: Buteo swainsoni

EDGE Analysis

Uniqueness Scale: Similiar (0) 
0
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
6
 Unique & Vulnerable (100)
ED Score: 2.19703
EDGE Score: 1.16222
Learn more at EDGE of Existence programme

Attributes

Adult Weight [1]  2.116 lbs (960 g)
Birth Weight [3]  39 grams
Female Weight [5]  2.445 lbs (1.109 kg)
Male Weight [5]  1.781 lbs (808 g)
Weight Dimorphism [5]  37.3 %
Breeding Habitat [2]  Temperate grasslands, Agricultural
Wintering Geography [2]  S. American Lowlands
Wintering Habitat [2]  Tropical grasslands, Agricultural
Diet [4]  Carnivore (Invertebrates), Carnivore (Vertebrates)
Diet - Ectothermic [4]  10 %
Diet - Endothermic [4]  60 %
Diet - Invertibrates [4]  30 %
Forages - Aerial [4]  20 %
Forages - Canopy [4]  20 %
Forages - Mid-High [4]  20 %
Forages - Understory [4]  20 %
Forages - Ground [4]  20 %
Clutch Size [6]  2
Clutches / Year [3]  1
Fledging [1]  43 days
Global Population (2017 est.) [2]  850,000
Incubation [3]  31 days
Mating Display [7]  Acrobatic aerial display
Maximum Longevity [3]  20 years
Migration [8]  Intercontinental
Raptor Research Conservation Priority [9]  135
Snout to Vent Length [1]  19 inches (49 cm)
Wing Span [10]  4.166 feet (1.27 m)
Female Maturity [3]  2 years
Male Maturity [3]  2 years

Ecoregions

Protected Areas

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Important Bird Areas

Biodiversity Hotspots

Prey / Diet

Prey / Diet Overlap

Predators

Aquila chrysaetos (Golden Eagle)[11]

Consumers

Parasitized by 
Centrorhynchus buteonis[18]
Serratospiculum verrucosum <Unverified Name>[18]

Range Map

External References

NatureServe Explorer

Audio

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Provided by eNature via Myxer Author: Lang Elliot

Citations

Attributes / relations provided by
♦ 1Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 2Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
♦ 3de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 4Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
♦ 5England, AS, MJ Bechard, and CS Houston. 1997. Swainson's Hawk (Buteo swainsoni). In: A. Poole and F. Gill (eds.), The Birds of North America, No. 265. The Academy of Natural Sci., Philadelphia, PA, and The American Ornithologists' Union, Washington, DC
♦ 6Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303
♦ 7Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
♦ 8Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at animaldiversity.org
♦ 9Buechley ER, Santangeli A, Girardello M, et al. Global raptor research and conservation priorities: Tropical raptors fall prey to knowledge gaps. Divers Distrib. 2019;25:856–869. https://doi.org/10.1111/ddi.12901
♦ 10del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 11Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 12SPECIES ASSESSMENT FOR MOUNTAIN PLOVER (CHARADRIUS MONTANUS) IN WYOMING, HAMILTON SMITH AND DOUGLAS A. KEINATH, United States Department of the Interior, Bureau of Land Management, November 2004
♦ 13SPECIES ASSESSMENT FOR LONG-BILLED CURLEW (NUMENIUS AMERICANUS) IN WYOMING, DARBY N. DARK-SMILEY and DOUGLAS A. KEINATH, Wyoming Natural Diversity Database 2000
♦ 14Sylvilagus audubonii, Joseph A. Chapman and Gale R. Willner, MAMMALIAN SPECIES No. 106, pp. 1-4 (1978)
♦ 15Sylvilagus nuttallii, Joseph A. Chapman, MAMMALIAN SPECIES No. 56, pp. 1-3 (1975)
♦ 16Spermophilus richardsonii, Gail R. Michener and James W. Koeppl, Mammalian Species No. 243, pp. 1-8, (1985)
♦ 17Spermophilus townsendii, Eric A. Rickart, MAMMALIAN SPECIES No. 268, pp. 1-6 (1987)
♦ 18Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License
Audio software provided by SoundManager 2
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0