|Scientific Name:||Picoides tridactylus|
|Species Authority:||(Linnaeus, 1758)|
|Taxonomic Source(s):||del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International.|
Picoides tridactylus and P. funebris (del Hoyo and Collar 2014) were previously lumped as P. tridactylus following AOU (2003). P. tridactylus (del Hoyo and Collar 2014) was previously split into P. tridactylus and P. dorsalis following AOU (2003), and prior to that all three taxa were lumped as P. tridactylus following Sibley and Monroe (1990, 1993).
|Red List Category & Criteria:||Least Concern ver 3.1|
|Facilitator/Compiler(s):||Butchart, S., Ekstrom, J., Pilgrim, J. & Symes, A.|
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Native:Albania; Austria; Belarus; Bosnia and Herzegovina; Bulgaria; Canada; China; Croatia; Czech Republic; Estonia; Finland; France; Germany; Greece; Italy; Japan; Kazakhstan; Korea, Democratic People's Republic of; Kyrgyzstan; Latvia; Liechtenstein; Lithuania; Macedonia, the former Yugoslav Republic of; Mongolia; Montenegro; Norway; Poland; Romania; Russian Federation; Serbia (Serbia); Slovakia; Slovenia; Sweden; Switzerland; Ukraine; United States
|Continuing decline in area of occupancy (AOO):||Unknown|
|Extreme fluctuations in area of occupancy (AOO):||No|
|Estimated extent of occurrence (EOO) - km2:||23500000|
|Continuing decline in extent of occurrence (EOO):||Unknown|
|Extreme fluctuations in extent of occurrence (EOO):||No|
|Continuing decline in number of locations:||Unknown|
|Extreme fluctuations in the number of locations:||No|
|Lower elevation limit (metres):||360|
|Upper elevation limit (metres):||2700|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||In Europe, the breeding population is estimated to number 350,000-1,100,000 breeding pairs, equating to 1,050,000-3,300,000 individuals (BirdLife International 2004). Europe forms 5-24% of the global range, so a very preliminary estimate of the global population size is 4,380,000-66,000,000 individuals, although further validation of this estimate is needed.
Trend Justification: Although declines occurred in parts of its European range from 1970-2000, it has been stable across much of its European range during 1990-2000 (BirdLife International 2004).
|Current Population Trend:||Stable|
|Habitat and Ecology:||The species inhabits mature conifer forests, particularly spruce Picea spp., and is somewhat irruptive, being found commonly where disturbance such as fire has caused local outbreaks of insects (Winkler et al. 1995).|
|Continuing decline in area, extent and/or quality of habitat:||Unknown|
|Generation Length (years):||4.8|
|Movement patterns:||Not a Migrant|
|Major Threat(s):||Large-scale commercial logging and modern forestry management practices, including fire suppression and removal of dead or insect-infested trees, have led to declines of P. t. dorsalis.|
|Citation:||BirdLife International. 2014. Picoides tridactylus. The IUCN Red List of Threatened Species 2014: e.T22727137A40802463. . Downloaded on 26 May 2016.|
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