Integrated data on the taxon and morpho-specific year-round diet and endozoochorous seed dispersal by the world’s largest grouse, the Capercaillie Tetrao urogallus
Moss, R. Grouse and ptarmigan nutrition in the wild and in captivity. Proc. Nutr. Soc. 56, 1137–1145 (1997).
Google Scholar
Moss, R. & Hanssen, I. Grouse nutrition. Nutr. Abstr. Rev. B 50, 555–567 (1980).
Pulliainen, E. & Tunkkari, P. S. Responses by the Capercaillie Tetrao urogallus, and the Willow Grouse Lagopus lagopus, to the green matter available in early spring. Holarctic Ecol. 14, 156–160 (1991).
Andreev, A. A. & Lindén, H. Winter energetics of the Capercaillie-a methodological approach. Ornis Fenn. 71, 33–21 (1994).
Ando, H. et al. Methodological trends and perspectives of animal dietary studies by noninvasive fecal DNA metabarcoding. Environ. DNA 2, 391–406 (2020).
Google Scholar
Chua, P. Y. S. et al. Molecular dietary analyses of western capercaillies (Tetrao urogallus) reveal a diverse diet. Environmental DNA 3, 1156–1171 (2021).
Google Scholar
Ingvaldsen, E. W. et al. Fecal DNA metabarcoding reveals seasonal and annual variation in willow ptarmigan diet. R. Soc. Open Sci. 11231518 (2024).
Saniga, M. Diet of the capercaillie (Tetrao urogallus) in a Central-European mixed spruce-beech-fir and mountain spruce forest. Folia Zool. 47, 115–124 (1998).
Picozzi, N., Moss, R. & Catt, D. Capercaillie habitat, diet and management in a Sitka spruce plantation in central Scotland. Forestry 69, 373–388 (1996).
Google Scholar
Rodríguez, A. E. & Obeso, J. R. Diet of the Cantabrian capercaillie: geographic variation and energetic content. Ardeola 47, 77–83 (2000).
Siano, R., Herzog, S., Exo, K.-M. & Bairlein, F. Diet of Capercaillies (Tetrao urogallus L.) released in the Harz Mountains. Vogelwarte 49, 137–148 (2011).
Summers, R. W., Proctor, R., Thorton, M. & Avey, G. Habitat selection and diet of the Capercaillie Tetrao urogallus in Abernethy Forest, Strathspey, Scotland. Bird Study 5, 58–68 (2004).
Google Scholar
Orłowski, G., Czarnecka, J. & Panek, M. Autumn-winter diet of Grey Partridges Perdix perdix in winter crops, stubble fields and fallows. Bird Study 58, 473–486 (2011).
Google Scholar
Schurr, F. M. et al. Long-distance seed dispersal. Ann. Plant Rev. 38, 204–237 (2009).
Google Scholar
Vargas, P., Heleno, R. & Costa, J. EuDiS – A comprehensive database of the seed dispersal syndromes of the European flora. figshare. Dataset. (2023).
Welch, D., Scott, D. & Doyle, S. Studies on the paradox of seedling rarity in Vaccinium myrtillus L. in NE Scotland. Bot. J. Scot. 52, 17–30 (2000).
Google Scholar
Orłowski, G., Czarnecka, J., Goławski, A., Karg, J. & Panek, M. The effectiveness of endozoochory in three avian seed predators. J. Ornithol. 157, 61–73 (2016).
Google Scholar
García-Rodríguez, A. et al. Functional complementarity of seed dispersal services provided by birds and mammals in an alpine ecosystem. J. Ecol. 110, 232–247 (2021).
Google Scholar
Case, S. B. et al. Introduced galliforms as seed predators and dispersers in Hawaiian forests. Biol Invasions 24, 3083–3097 (2022).
Orłowski, G. & Czarnecka, J. Granivory of birds and seed dispersal: Viable seeds of Amaranthus retroflexus L. recovered from the droppings of the grey partridge Perdix perdix L. Pol. J. Ecol. 57, 177–182 (2009).
Storch, I. Conservation status of grouse worldwide: an update. Wild. Biol. 13(Suppl. 1), 5–12 (2007).
Google Scholar
Jahren, T., Storaas, T., Willebrand, T., Fossland Moa, P. & Hagen, B. Declining reproductive output in capercaillie and black grouse – 16 countries and 80 years. Anim. Biol. J. 66, 363–400 (2016).
Google Scholar
Kämmerle, J. L. & Storch, I. Predation, predator control and grouse populations: a review. Wildl. Biol. 1–12 (2019).
Moss, R., Oswald, J. & Baines, D. Climate change and breeding success: decline of the capercaillie in Scotland. J. Anim. Ecol. 70, 47–61 (2001).
Google Scholar
Zawadzka, D. et al. Liczebność i rozmieszczenie głuszca w Polsce w XXI wieku. Sylwan 163, 773–783 (2019).
Boakes, E. H. et al. GalliForm, a database of Galliformes occurrence records from the Indo-Malay and Palaearctic, 1800–2008. Sci Data. 7, 344 (2020).
Google Scholar
Potapov, R. & Sale, R. Tetrao. in: Grouse of the World (New Holland Publishers. London, Cape Town, Sydney, Auckland, 2013).
Drozdowski, S., Zawadzka, D., Zawadzki, G., Studnicki, M. & Brzeziecki, B. Mature stand developmental stage has ceased toconstitute the most suitable habitat for the capercaillie in Augustów Forest, Poland. Forests Ecosystem 8, 51 (2021).
Google Scholar
Suter, W., Graf, R. & Hess, R. Capercaillie Tetrao urogallus and avian biodiversity: testing the umbrella-species concept. Conserv. Biol. 16, 778–788 (2002).
Google Scholar
Pakkala, T., Pellikka, J. & Linden, H. Capercaillie Tetrao urogallus – a good candidate for an umbrella species in taiga forests. Wildl. Biol. 9, 309–316 (2003).
Google Scholar
Lõhmus, A. et al. The Capercaillie Tetrao urogallus: an iconic focal species forknowledge-based integrative management and conservation of Baltic forest. Biodivers. Conserv. 26, 1–21 (2017).
Google Scholar
Wegge, P. & Rolstad, J. Clearcutting forestry and Eurasian boreal forest grouse: long-term monitoring of sympatric capercaillie Tetrao urogallus and black grouse T. tetrix reveals unexpected effects on their population performances. For. Ecol. Manage. 261, 1520–1529 (2011).
Google Scholar
Zawadzki, J. & Zawadzka, D. Population decline of Capercaillies Tetrao urogallus in the Augustów Forest (NE Poland). Acta Ornithol. 47, 199–204 (2012).
Google Scholar
Gil, J. A., Gómez-Serrano, M. Á. & López-López, P. Population decline of the Capercaillie Tetrao urogallus aquitanicus in the Central Pyrenees. Ardeola 67, 285–306 (2020).
Google Scholar
Merta, D., Kobielski, J., Theuerkauf, J. & Gula, R. Towards a successful reintroduction of Capercaillies – activity, movements and diet of young released to the lower Silesia Forest, Poland. Wild. Biol. 22, 130–135 (2016).
Google Scholar
Bird Life International. Tetrao urogallus. The IUCN Red List of Threatened Species 2024: e.T22679487A264563031. Accessed on 25 May 2025.
Velázquez, J., Gutiérrez, J., Hernando, A. & García-Abril, A. Evaluating landscape connectivity in fragmented habitats: Cantabrian capercaillie (Tetrao urogallus cantabricus) in northern Spain. For. Ecol. Manag. 389, 59–67 (2017).
Google Scholar
Storch, I. Grouse–Status Survey and Action Plan 2006–2010 IUCN. (Gland Switzerland and Cambridge UK and World Pheasant Association, Fordinbridge, UK., 2007a).
Gregsen, F. & Gregsen, H. Ongoing population decline and range concentration in Norwegian forest grouse. Ornis Nor. 32, 179–189 (2009).
Google Scholar
Vaisfeld, M. A., Pushkaryov, S. V. & Gubar, P. Number and dynamics and present-day resources of majorgame animals in Russia. Balcan J. Wildl. Res. 1, 40–54 (2014).
Klaus, S. Effects of forestry on grouse populations: case studies from the Thuringian and Bohemian Forests, central Europe. Ornis Scandinavica 22, 218–223 (1991).
Google Scholar
Kurki, S., Nikula, A., Helle, P. & Lindén, H. Landscape fragmentation and forest composition effects on grouse breeding success in boreal forests. Ecology 81, 1985–1997 (2000).
Sirkiä, S. et al. Are the declining trends in forest grouse populations due to changes in the forest age structure? A case study of Capercaillie in Finland. Biol. Cons. 143, 1540–1548 (2010).
Google Scholar
Marcstrom, V., Kenward, R. E. & Engren, E. The impact of predation on boreal tetraonids dur-ing vole cycles: an experimental study. Jour. Anim. Ecol. 57, 859–872 (1988).
Google Scholar
Kurki, S., Helle, P., Linden, H. & Nikula, A. Breeding success of black grouse and capercaillie in relation tomammalian predator densities on two spatial scales. Oikos 79, 301–310 (1997).
Google Scholar
Tornberg, R. Pattern of goshawk Accipiter gentilis predation on four forest grouse species in northern Finland. Wildl. Biol. 7, 245–256 (2001).
Google Scholar
Merta, D., Kobielski, J. & Krzywiński, A. Rzońca Z. Preliminary results of the Capercaillie (Tetrao urogallus) recovery program in Bory Dolnośląskie Forest, south-western Poland. Vogelwelt 134, 65–74 (2013).
Merta, D., Kobielski, J., Krzywiński, A., Theuerkauf, J. & Gula, R. A new mother-assisted rearing and release technique (“born to be free”) reduces the exploratory movements and increases survival of young Capercaillies. Eur. J. Wild. Res. 61, 299–302 (2015).
Google Scholar
Selas, V. et al. Climate change in Norway: Warm summers limit grouse reproduction. Pop. Ecol. 53, 361–371 (2011).
Google Scholar
Summers, R. W., McFarlane, J. & Pearce-Higgins, J. Measuring avoidance by Capercaillie Tetrao urogallus of woodlands close to tracks. Wildl. Biol. 13, 19–27 (2007).
Google Scholar
Thiel, D., Jenni-Eiermann, S., Palme, R. & Jenni, L. Winter tourism increases stress hormone levels in the Capercaillie Tetrao urogallus. Ibis 153, 122–133 (2011).
Google Scholar
Storch, I. Human disturbance of grouse – why and when? Wildl. Biol. 19, 390–403 (2013).
Google Scholar
Coppes, J., Ehrlacher, J., Thiel, D., Suchant, R. & Braunisch, V. Outdoor recreation causes effective habitat reduc-tion in capercaillie Tetrao urogallus: a major threat forgeographically restricted populations. J. Avian Biology 48, 1583–1594 (2017).
Google Scholar
Segelbacher, G., Hoglund, J. & Storch, I. From connectivity to isolation: genetic consequences of populationfragmentation in capercaillie across Europe. Mol. Ecol. 12, 1773–1780 (2003).
Google Scholar
Rutkowski, R., Zawadzka, D., Suchecka, E. & Merta, D. Conservation genetics of the capercaillie in Poland – delineation of conservation units. PloS One 12, e0174901 (2017).
Google Scholar
Merta, D., Zawadzka, D. & Krzywiński, A. Efektywność projektów reintrodukcji głuszca (Tetrao urogallus) w Europie. Sylwan 159, 863–871 (2015).
Siano, R. & Klaus, S. Capercaillie Tetrao urogallus release projects in Germany after 1950 – a review. Vogelwelt 134, 3–18 (2013).
Seiler, C., Angelstam, P. & Bergmann, H. H. Conservation Releases of captive reared Grouse in Europe. What do we know and what do we need? Cahiers d’Ethologie 20, 235–252 (2002).
Helminen, M. & Viramo, J. Animal food of capercaillie (Tetrao urogallus) and black grouse (Lyrurus tetrix) in autumn. Ornis Fenn. 39, 1–12 (1962).
Picozzi, N., Moss, R. & Kortland, K. Diet and survival of capercaillie Tetrao urogallus chicks in Scotland. Wildl. Biol. 5, 11–23 (1999).
Google Scholar
Wegge, P. & Kastdalen, L. Habitat and diet of young grouse broods: resource partitioning between Capercaillie (Tetrao urogallus) and Black Grouse (Tetrao tetrix) in boreal forests. J. Ornithol. 149, 237–244 (2008).
Google Scholar
Kondracki, J. Geografia regionalna Polski (Wydawnictwo Naukowe PWN, Warszawa, 2002).
Bena, W. Dzieje Puszczy Zgorzelecko-Osiecznickiej. (Wydawnictwo F.H. Agat, Zgorzelec, 2005).
Kobielski, J., Jędrzejczak, M., Moskaluk, W., Nowak W. & Piechota W. Charakterystyka I Łowieckiego Rejonu Hodowlanego “Bory Dolnośląskie Południowo-Zachodnie”. In: Gospodarka łowiecka i ochrona populacji dzikich zwierząt na terenie Regionalnej Dyrekcji Lasów Państwowych we Wrocławiu. (eds. Bobek, B., Płaksej, A., Frąckowiak W. & Merta D. Volume II, 44–73, Wrocław, 2007).
Buła, E. Materiały do rozmieszczenia i biologii głuszca (Tetrao urogallus C.L. Brehm) w województwie wrocławskim. Przegl. Zool. 13, 212–233 (1969).
Głowaciński Z. & P P. Głuszec. In: Głowaciński Z (ed). Polska czerwona księga zwierząt – Kręgowce. PWRiL, Warszawa. (2001).
Keller, M. Ratujmy kuraki leśne. Łowiec Polski 4, 24–28 (2001).
Merta, D. et al. Ocena potencjalnego wpływu drapieżników naziemnych i skrzydlatych na potencjalne lęgi głuszca i cietrzewia w Borach Dolnośląskich. In: Ochrona kuraków leśnych (ed. Haze, M.) p. 224–241 (Centrum Informacyjne Lasów Państwowych. Warszawa 2008).
Krzywiński, A., Keller, M. & Kobus, A. “Born to be free” an innovatory method of restitution and protection of endangered and isolated grouse population (Tetraonidae). Vogelwelt 134, 55–64 (2013).
Kobielski, J. & Merta. D. Ostoja Polana. In: Dokumentacja do opracowania Krajowego Programu Ochrony Głuszca Tetrao urogallus. (eds. Zawadzka D. & Żurek Z., Komitet Ochrony Kuraków, Poręba Wielka 2016).
Borchtchevski, V. The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia Ornis Fenn. 86, 18–29 (2009).
Orłowski, G. & Czarnecka, J. Re-evaluation of the role of the grey partridge Perdix perdix as a disperser of arable weed seeds. J. Ornithol. 154, 139–144 (2013).
Google Scholar
Orłowski, G., Czarnecka, J. & Goławski, A. Winter diet of Yellowhammers Emberiza citronella on contemporary farmland: the different contribution of forbs, wild grasses and cereals in semi natural and agricultural habitats. Bird Study 61, 484–495 (2014).
Google Scholar
Orłowski, G. & Karg, J. Diet of nestling Barn Swallows Hirundo rustica in rural areas of Poland. Cent. Eur. J. Biol. 6, 1023–1035 (2011).
Orłowski, G., Karg, J. & Karg, G. Functional Invertebrate Prey Groups Reflect Dietary Responses to Phenology and Farming Activity and Pest Control Services in Three Sympatric Species of Aerially Foraging Insectivorous Birds. PLoS ONE 9, e114906 (2014).
Google Scholar
Czarnecka, J., Merta, D., Kobielski, J., Karg, J. & Orłowski, G. Data on the taxon and morpho-specific year-round diet and endozoochorous seed dispersal of the world’s largest grouse, the Capercaillie Tetrao urogallus ver. 2. Zenodo. (2024).
Hurlbert, A. H., Olsen, A., Sawyer, M. & Winner, P. The Avian Diet Database as a source of quantitative information on avian diets. Sci. Data 8, 260 (2021).
Google Scholar
Rutkowski, L. Klucz do oznaczania roślin Polski Niżowej (Key to identifying plants of the Polish Lowlands). (Wyd. Nauk. PWN, Warszawa, 1998).
Plant Net Accessed on 20 May 2025.
Hintze, C. et al. D3: The Dispersal and Diaspore Database – Baseline data and statistics on seed dispersal. Perspect. Pl. Ecol. Evol. Syst. 15, 180–192 (2013).
Google Scholar
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