Animalia > Chordata > Aves > Passeriformes > Emberizidae > Calamospiza > Calamospiza melanocorys

Calamospiza melanocorys (Lark Bunting)

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EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.03922
EDGE Score: 1.79827


Adult Weight [1]  36 grams
Birth Weight [3]  3 grams
Breeding Habitat [2]  Temperate grasslands
Wintering Geography [2]  Chihuahuan Grasslands
Wintering Habitat [2]  Chihuahuan grasslands, Desert scrub, Agricultural
Diet [4]  Carnivore (Invertebrates), Frugivore, Granivore
Diet - Fruit [4]  10 %
Diet - Invertibrates [4]  30 %
Diet - Seeds [4]  60 %
Forages - Aerial [4]  10 %
Forages - Canopy [4]  20 %
Forages - Mid-High [4]  10 %
Forages - Understory [4]  10 %
Forages - Ground [4]  50 %
Female Maturity [3]  1 year
Male Maturity [3]  1 year
Clutch Size [5]  5
Clutches / Year [3]  1
Global Population (2017 est.) [2]  10,000,000
Incubation [3]  12 days
Mating Display [6]  Non-acrobatic aerial display
Mating System [6]  Monogamy (mostly)
Maximum Longevity [3]  4 years
Migration [7]  Intracontinental


Protected Areas


Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No
Madrean Pine-Oak Woodlands Mexico, United States No

Emblem of


Prey / Diet

Avena sativa (oats)[8]
Eriocoma hymenoides (Indian ricegrass)[8]
Helianthus annuus (Sunflower)[8]
Reynoutria japonica (Japanese knotweed)[8]
Triticum aestivum (common wheat)[8]


Buteo regalis (Ferruginous Hawk)[8]
Buteo swainsoni (Swainson's Hawk)[8]
Falco sparverius (American Kestrel)[8]

Range Map

External References

NatureServe Explorer


Play / PauseVolume
Provided by eNature via Myxer Author: Lang Elliot


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
5Jetz 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
6Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
7Myers, 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
8Jorrit 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.
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
Audio software provided by SoundManager 2
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0