Animalia > Chordata > Aves > Passeriformes > Polioptilidae > Polioptila > Polioptila nigricepsPolioptila nigriceps (Black-capped Gnatcatcher)Language: Spanish The black-capped gnatcatcher (Polioptila nigriceps) is a very small songbird. Adults are blue-grey on the upperparts with white underparts, with a long slender bill and a long black tail with white outer tailbands on the uppertail. The undertail is extensively white, showing black only along a thin vertical center line and at the very tip. Males show a prominent black cap. This species is very similar to the California gnatcatcher and the black-tailed gnatcatcher. These birds are primarily non-migratory, remaining in breeding territories year round. |
Uniqueness Scale: Similiar (0) Unique (100) Uniqueness & Vulnerability Scale: Similiar & Secure (0) Unique & Vulnerable (100) ED Score: 4.40194 EDGE Score: 1.68676 |
Adult Weight [1] | 6.5 grams | ![](/img/transp.gif) | Breeding Habitat [2] | Desert scrub, Tropical dry forests | Wintering Geography [2] | Non-migrartory | Wintering Habitat [2] | Desert scrub, Tropical dry forests | ![](/img/transp.gif) | Diet [3] | Carnivore (Invertebrates) | Diet - Invertibrates [3] | 100 % | Forages - Mid-High [3] | 50 % | Forages - Understory [3] | 50 % | ![](/img/transp.gif) | Clutch Size [1] | 4 | Global Population (2017 est.) [2] | 200,000 |
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Attributes / relations provided by ♦ 1del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. ♦ 2Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018. ♦ 3Hamish 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 Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database |
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
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