Lesser Spotted Woodpecker

Lesser Spotted Woodpecker

Dryobates minor
Lesser Spotted Woodpecker, Rick Ingham

Introduction

This sparrow-sized woodpecker, with its black and white plumage and red crown, has been lost from many of its former haunts.

Restricted to England and Wales, we have seen substantial declines since the 1980s, the reasons for which remain unknown. The loss of open woodland habitats may be one factor, but others – including possible competition with an expanding Great Spotted Woodpecker population – also need to be considered.

Lesser Spotted Woodpeckers start their breeding season early in the year, their drumming display one of the few indications of their presence.

Lesser Spotted Woodpecker, Rick Ingham

Key Stats

Status
Scarce
Scarce
Weight
Weight
20.7g
Eggs
Eggs
4-6
BTO Records
BTO Records
26k records
Population and distribution stats for:

Identification

Curated resources to aid in the identification of Lesser Spotted Woodpecker

ID Videos

This section features BTO training videos headlining this species, or featuring it as a potential confusion species.

Great & Lesser Spotted Woodpeckers

Songs and Calls

Listen to example recordings of the main vocalisations of Lesser Spotted Woodpecker, provided by xeno-canto contributors.

Call:

Other:

Movement

Information about Lesser Spotted Woodpecker movements and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.

Britain & Ireland movement

View a summary of recoveries in the Online Ringing Report

Foreign locations of birds ringed or recovered in Britain & Ireland

Dots show the foreign destinations of birds ringed in Britain & Ireland, and the origins of birds ringed overseas that were subsequently recaptured, resighted or found dead in Britain & Ireland. Dot colours indicate the time of year that the species was present at the location.

  • Winter (Nov-Feb)
  • Spring (Mar-Apr)
  • Summer (May-Jul)
  • Autumn (Aug-Oct)
Foreign locations of birds ringed or recovered in Britain & Ireland

European movements

EuroBirdPortal uses birdwatcher's records, such as those logged in BirdTrack to map the flows of birds as they arrive and depart Europe. See maps for this species here.

Biology

Lifecycle and body size information for Lesser Spotted Woodpecker, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.

Productivity and Nesting

Nesting timing

Typical (exceptional) number of broods
1

Egg measurements

Typical length x width
19x15 mm
Mass (% shell)
2.2g (6%)

Clutch Size

Typical number
4-6 eggs
Average ±1 standard deviation
4.7±1.42 eggs
Observed minimum and maximum
2-6 eggs

Incubation

Incubation by
Male + Female
Typical duration
14-15 days
Observed average ±1 standard deviation
14.1±1.02 days
Observed minimum and maximum
12-15.5 days

Fledging

Type of chick
Altricial, naked
Typical duration
19-21.5 days
Observed average ±1 standard deviation
20.52±1.3 days
Minimum and maximum
19-22.5 days
N=88, -Source

Survival and Longevity

Survival is shown as the proportion of birds surviving from one year to the next and is derived from bird ringing data. It can also be used to estimate how long birds typically live.

View number ringed each year in the Online Ringing Report.

Lifespan

Typical life expectancy of bird reaching breeding age
7 years with breeding typically at 1 year
Maximum age from a ringed bird
6 years, 4 months, 9 days (set in 2010)

Survival of adults

All adults
0.85
Females
0.85
Males
0.85

Biometrics

Wing length and body weights are from live birds (source).

Wing length

Average ±1 std deviation; range and sample size in brackets.
Juvenile
87.9±2.4 mm
(84-91 mm, N=29)
All adults
88.1±2.2 mm
(84-91 mm, N=64)
Female
88.1±2.3 mm
(84-91 mm, N=22)
Male
88.1±2.1 mm
(85-92 mm, N=42)

Body weight

Average ±1 std deviation; 5th and 95th percentiles and sample size in brackets.
Juvenile
20.5±1.1 g
(19.1-22 g, N=28)
All adults
20.7±1.1 g
(19-22.5 g, N=59)
Female
20.5±1.1 g
(19-22 g, N=21)
Male
20.8±1.1 g
(19.1-22.6 g, N=38)

Ring Size

B

Classification, names and codes

Taxonomy, names and species codes for Lesser Spotted Woodpecker

Classification and Codes

  • Order: Piciformes
  • Family: Picidae
  • Scientific name: Dryobates minor
  • Authority: Linnaeus, 1758
  • BTO 2-letter code: LS
  • BTO 5-letter code: LESWO
  • Euring code number: 8870

Alternate species names

  • Catalan: picot garser petit
  • Czech: strakapoud malý
  • Danish: Lille Flagspætte
  • Dutch: Kleine Bonte Specht
  • Estonian: väike-kirjurähn
  • Finnish: pikkutikka
  • French: Pic épeichette
  • Gaelic: Snagan-daraich-beag
  • German: Kleinspecht
  • Hungarian: kis fakopáncs
  • Icelandic: Stubbspæta
  • Italian: Picchio rosso minore
  • Latvian: mazais dzenis
  • Lithuanian: mažasis margasis genys
  • Norwegian: Dvergspett
  • Polish: dzieciolek
  • Portuguese: pica-pau-galego
  • Slovak: datel malý
  • Slovenian: mali detel
  • Spanish: Pico menor
  • Swedish: mindre hackspett
  • Welsh: Cnocell Fraith Fach
  • English folkname(s): Barred Woodpecker, Hickwall

Research

Interpretation and scientific publications about Lesser Spotted Woodpecker from BTO scientists.

Causes of Change and Solutions

Causes of change

The demographic causes of decline are not yet known and, although there is low breeding success in some populations, the reasons for the decline are unclear.

Further information on causes of change

The demographic causes of decline are not yet known, and although there is low breeding success in some populations the reasons for the decline in the UK and elsewhere in Europe are unclear (Charman et al. 2009). A study of nest data in Britain found that the mean number of young fledged has declined since the 1980s, possibly exacerbated by the generally warmer springs, with loss of chicks, probably as a result of starvation, being the main cause of low productivity; hence this could potentially have contributed to the population decline (Smith & Smith 2020). However, a detailed field study in Sweden provided good evidence that neither clutch size, brood size in successful nests, fledging success in successful nests nor mean nestling weight differed significantly there between years, despite a threefold difference in population variation (Wiktander et al. 2001).

Loss of open woodland is one factor that has been suggested to have contributed to declines in this species. Lesser Spotted Woodpecker is a species that requires mature, open woodland and large areas of woodland at a landscape scale (Wiktander et al. 2001, Charman et al. 2010). Wiktander et al. postulate that the decrease in the area of deciduous forest in Sweden is probably one cause of this species' decline, although they present no specific evidence to support this (Wiktander et al. 1992). Loss of dead wood within woodlands has been proposed as another factor; however, given that dead wood has increased in Britain (Amar et al. 2010) this seems an unlikely cause here. A field study in Poland provided evidence that Lesser Spotted Woodpecker presence is closely correlated with the amount of dead wood and large deciduous trees (Angelstam et al. 2002). In their review of the causes of declines of woodland birds Fuller et al. (2005) state that reductions in small-diameter dead wood suitable for foraging may be a factor in the decline, although recent surveys provided evidence that there was no difference in dead-wood abundance between occupied and unoccupied woods (Charman et al. 2010). However, dead snags have a high turnover and were found to be suitable for nesting sites by woodpeckers for only a few years after death and, furthermore, dead-wood conditions may now be more favourable for Great Spotted Woodpeckers (Smith 2007).

A third hypothesis relates to competition and predation. A field study in Sweden found that Great Spotted Woodpeckers compete with Lesser Spotteds for insect food in dead wood when spruce seed crops are low (Nilsson et al. 1992), but evidence for this in Britain is limited (Charman et al. 2010). The two species may compete for nest sites, since they overlap considerably in their use of nesting substrates (Glue & Boswell 1994). Amar et al. (2006) found that Lesser Spotted Woodpecker decreased more heavily in woods with relatively high numbers of grey squirrel dreys but there was no other evidence that squirrel density was a significant factor in declines.

Changing climate has been found to have an impact on survival and reproduction in some populations. In Norway, a positive relationship between spring numbers of Lesser Spotted Woodpecker and previous June temperatures has been interpreted as an effect of temperatures on woodpecker survival and reproduction during the breeding season (Steen et al. 2006, Selas et al. 2008). Steen et al. (2006) also found that winter temperatures exhibit a direct positive effect on winter survival. However, given that there has been a general trend for increasing temperatures in the UK (see here), it seems unlikely that changes in climate have been responsible for Lesser Spotted Woodpecker declines. Work in Sweden and Germany suggests that changes in phenology could play a role in breeding success, finding that declines in food availability during the breeding season are likely to be related to seasonal declines in reproductive performance as woodpeckers adjust their timing of breeding to coincide with the seasonal food peak (Wiktander et al. 2001, Rossmanith et al. 2007). However, there is little further evidence for this. In Britain, breeding success has fallen and is lower than in recent studies in Germany and Sweden; chick mortality is especially high, most probably related to food shortages in the breeding period (Charman et al. 2012, Smith & Charman 2012).

Information about conservation actions

The species requires large areas of mature, open deciduous woodland with deadwood at a landscape scale (Wiktander et al. 2001; Charman et al. 2010), but the decline has occurred even in areas where this habitat has apparently been available. Reasons for the substantial decline of this species remain unclear (see Cause of Change section, above) and investigations are ongoing to try to identify measures that may reverse the downward trend (Smith & Charman 2012).

Publications (2)

Bioacoustics as a tool for the detection and monitoring of a scarce woodland bird – the Lesser Spotted Woodpecker

Author: Smith, K., Smith, L., Addleton, N., Clements, R., Fisk, S., Gillings, S., Mallalieu, M., Mathieson H. & Robin, A.

Published: 2025

Passive acoustic monitoring is an effective way of monitoring the elusive and declining Lesser Spotted Woodpecker, improving our understanding of the species’ status, ecology and the conservation actions that might reverse its fortunes.

01.12.25

Papers

View on journal website

Birds of Conservation Concern Wales 4: the population status of birds in Wales

Author: Johnstone, I.G., Hughes, J., Balmer, D.E., Brenchley, A., Facey, R.J., Lindley, P.J., Noble, D.G. & Taylor, R.C.

Published: 2022

The latest review of the conservation status of birds in Wales. The report assessed all 220 bird species which regularly occur in Wales. There are now 60 species of bird on the Red List, with 91 on the Amber List and just 69 - less than a third of the total number of species - on the Green List. The latest review of the conservation status of birds in Wales comes 20 years after the first, when the Red List was less than half the length it is today. The report assessed all 220 bird species which regularly occur in Wales. There are now 60 species of bird on the Red List in Wales, with 91 on the Amber List and 69 on the Green List. The Birds of Conservation Concern in Wales report assesses the status of each species against a set of objective criteria. Data sources include the BTO/JNCC/RSPB Breeding Bird Survey and the BTO/RSPB/JNCC Wetland Bird Survey, as well as Bird Atlases and other BTO-led monitoring schemes and citizen science initiatives. These are used to quantify the changing status of the species’ Welsh population. The UK, European and global conservation status of the species is also considered, placing the Welsh population into a wider context. The Red ListSwift, Greenfinch and Rook – familiar breeding species in steep decline across the UK – are among the new additions to the Welsh Red List, which now also includes Purple Sandpiper, on account of a rapidly shrinking Welsh wintering population, and Leach’s Petrel, an enigmatic seabird in decline across its global range. These species now sit alongside well-known conservation priorities, such as Curlew, Hen Harrier and Turtle Dove as birds at risk of being lost from Wales for good. Uplands and woodlands Many of the species on the Red List are found in upland and farmland habitats. Starling, Tree Sparrow, Yellow Wagtail and Yellowhammer can no longer be found in much of Wales, while iconic species of mountain and moorland, such as Ring Ouzel, Merlin and Black Grouse, remain in serious trouble. Wales is well known for its populations of woodland birds; however, many of these – including Lesser Spotted Woodpecker, Willow Warbler and Spotted Flycatcher – also feature on the Red List. Goldcrest, which has seen its Welsh population shrink alarmingly in recent decades, is another new addition. On the coast The assessment for Birds of Conservation Concern Wales 4 took place before the impacts of avian influenza could be taken into account. Breeding seabird species have been struggling in Wales for many years, however, and most were already of conservation concern before the outbreak of this disease. Kittiwake, Puffin, Black-headed Gull, and Common, Arctic and Sandwich Tern remain on the Red List. Wales holds internationally significant numbers of breeding seabirds, making the decline of these colonies a global concern. The Amber ListDeclines in Wheatear, Garden Warbler and House Martin - all migrants which breed in Europe and winter in sub-Saharan Africa - mean these species have moved from the Green List to the Amber List. Many other ‘Afro-Palearctic' migrant species are also in decline, but the potential reasons for this, such as habitat loss and reduced availability of invertebrate prey, are not well understood. Closer to home, the declines in the Welsh Chaffinch population, linked to the disease trichomonosis, have seen the species Amber-listed. A number of other species have been placed on the Amber List because of the wider importance of their Welsh populations, which in each case make up more than half the UK total. Wales is home to more than three-quarters of the UK’s Choughs, for example, so recent declines are cause for concern. The nation’s breeding populations of Manx Shearwater, Pied Flycatcher, Goshawk and Hawfinch also account for more than half the UK total, as does its wintering population of Spotted Redshank. It’s not all bad news, though: some species now on the Amber List have moved up from the Red List, indicating some positive change in their population trends. These include Common Sandpiper, Great Black-backed Gull, Bullfinch, Goldcrest and Pied Flycatcher. The Green ListWhile the report contains much cause for alarm, several conservation success stories shine through. Red Kite was almost lost as a British bird during the first half of the 20th century, when only a handful of pairs remained in remote Welsh valleys. Since then, a sustained conservation effort has brought the species back from the brink. Wales is now home to more than 2,500 pairs of Red Kite and the species has now been moved to the Green List, reflecting this incredible change in fortunes. Song Thrush, Reed Bunting, Long-tailed Tit, Redwing and Kingfisher are among the other species to have gone Green, providing much-needed hope that things can go up as well as down.

06.12.22

Reports Birds of Conservation Concern

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