Animalia > Chordata > Aves > Strigiformes > Strigidae > Aegolius > Aegolius ridgwayi

Aegolius ridgwayi (Unspotted Saw-whet Owl)

Synonyms: Aegolius ridgwayi ridgwayi; Aegolius ridgwayi rostratus; Aegolius ridgwayi tacanensis; Cryptoglaux ridgwayi

Wikipedia Abstract

The unspotted saw-whet owl (Aegolius ridgwayi) is a small owl. It is a resident breeder in the highlands of Central America from southern Mexico south to western Panama, mainly above 2500 m. it has occasionally been considered conspecific with the northern saw-whet owl. There are currently no recognized subspecies. This nocturnal bird breeds in open mountain forests, in both the cloud forest and the higher oak woodland, laying its eggs in a tree hole. It takes rodents, shrews and other small mammals as its main prey, but will also feed on birds, bats and insects.
View Wikipedia Record: Aegolius ridgwayi

EDGE Analysis

Uniqueness Scale: Similiar (0) 
6
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
30
 Unique & Vulnerable (100)
ED Score: 13.6775
EDGE Score: 2.68632
Learn more at EDGE of Existence programme

Attributes

Adult Weight [1]  80 grams
Breeding Habitat [2]  Mexican pine-oak forests, Montane evergreen forests
Wintering Geography [2]  Non-migrartory
Wintering Habitat [2]  Mexican pine-oak forests
Diet [3]  Carnivore (Invertebrates), Carnivore (Vertebrates)
Diet - Endothermic [3]  80 %
Diet - Invertibrates [3]  20 %
Forages - Understory [3]  10 %
Forages - Ground [3]  90 %
Clutch Size [4]  6
Nocturnal [3]  Yes
Raptor Research Conservation Priority [5]  54

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Central American montane forests Mexico, Guatemala, El Salvador, Honduras, Nicaragua Neotropic Tropical and Subtropical Moist Broadleaf Forests
Central American pine-oak forests Mexico, Guatemala, Honduras, El Salvador, Nicaragua Neotropic Tropical and Subtropical Coniferous Forests
Chiapas montane forests Mexico Neotropic Tropical and Subtropical Moist Broadleaf Forests

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Chirripó National Park II 126117 Costa Rica  
La Amistad International Park National Park II 541617 Panama, Costa Rica  
Los Santos Forest Reserve 138488 Costa Rica  
Talamanca Range-La Amistad Reserves / La Amistad National Park World Heritage Site 1403176 Panama, Costa Rica  
Tapantí-Macizo de La Muer National Park II 12767 Costa Rica

Important Bird Areas

Name Location  IBA Criteria   Website   Climate   Land Use 
Santiaguito Volcano Guatemala A1, A2, A3
Yalijux Guatemala A1, A2, A3

Biodiversity Hotspots

Name Location Endemic Species Website
Mesoamerica Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama Yes

Range Map

External References

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.
♦ 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
♦ 4Jetz 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
♦ 5Buechley 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
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
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