Search references for TETRIX. Phrases containing TETRIX
See searches and references containing TETRIX!TETRIX
Topics referred to by the same term
Tetrix may refer to: Tetrix (band), a Canadian rock/improv band Tetrix (insect), a genus of insects in the family Tetrigidae called ground-hoppers Tetrix
Tetrix
Species of bird
The black grouse (Lyrurus tetrix), also known as northern black grouse, Eurasian black grouse, blackgame or blackcock, is a large bird in the grouse tribe
Black_grouse
Canadian rock/improv band
Conman Tetrix 1 (2002) Tetrix 2 (2002) Tetrix 3 (2003) Tetrix 4 (2003) Tetrix 5 (2004) Tetrix 6 (2005) Tetrix 7 (2006) Tetrix 8 (2007) Tetrix 9 (2008)
Tetrix_(band)
Fractal composed of triangles
figures touching, then iterating that step. The Sierpiński tetrahedron or tetrix is the three-dimensional analogue of the Sierpiński triangle, formed by
Sierpiński_triangle
Robotics kit for educational and competition use
TETRIX Robotics consists of two robotic kits by Pitsco Education. The two sets are the TETRIX MAX building system and the TETRIX PRIME building system
Tetrix_Robotics_Kit
belong to Tetrix, a genus of ground hoppers or pygmy grasshoppers in the family Tetrigidae. Tetrix aelytra Deng, Zheng & Wei, 2009 c g Tetrix akagiensis
List_of_Tetrix_species
Species of grasshopper
Tetrix brunnerii, known generally as the Brunner's pygmy grasshopper or Brunner's grouse locust, is a species of pygmy grasshopper in the family Tetrigidae
Tetrix_brunnerii
Species of grasshopper
Tetrix ceperoi, Cepero's groundhopper, is a member of the family Tetrigidae and is very similar to common grasshoppers. Unlike the common grasshopper,
Tetrix_ceperoi
Species of grasshopper
species Tetrix ornata: Tetrix ornata hancocki (Morse, 1899) Tetrix ornata insolens Rehn and Grant, 1956 Tetrix ornata occidua Rehn and Grant, 1956 Tetrix ornata
Tetrix_ornata
Species of grasshopper
Tetrix tenuicornis, the long-horned groundhopper, is a member of the Tetrigidae family. "ADW: Tetrix tenuicornis". Animal Diversity Web. University of
Tetrix_tenuicornis
Species of grasshopper
Tetrix transsylvanica, the Transsylvanian wingless groundhopper, is a species of insect in the family Tetrigidae. It is found in Romania and Slovenia and
Tetrix_transsylvanica
Species of grasshopper
Tetrix sierrane is a species of grasshopper in the family Tetrigidae. It is endemic to the United States. Orthopteroid Specialist Group (1996). "Tetrix
Tetrix_sierrane
Genus of grasshoppers
in the genus Tetrix. See: List of Tetrix species Tetrix arenosa (obscure pygmy grasshopper) Tetrix ceperoi (Cepero's ground-hopper) Tetrix ornata (ornate
Tetrix_(insect)
Hybrid bird
the western capercaillie (Tetrao urogallus) and the black grouse (Lyrurus tetrix). Kleven, Oddmund; Brøseth, Henrik; Jonassen, Kyrre; Pedersen, Hans Christian
Rackelhahn
Species of grasshopper
Tetrix subulata is the type species of groundhopper in the genus Tetrix, known as the slender ground-hopper, awl-shaped pygmy grasshopper and the slender
Tetrix_subulata
Species of grasshopper
Tetrix undulata, the common ground-hopper, is a species of groundhopper in the Orthoptera: Caelifera. T. undulata has a body length of 6–12 mm (0.24–0
Tetrix_undulata
Geographical region of Russia comprising North Asia
on 13 May 2021. Retrieved 18 June 2020. "Northern Black Grouse (Lyrurus tetrix). Photo Gallery.Birds of Siberia". sibirds.ru. Archived from the original
Siberia
Species of grasshopper
subspecies belong to the species Tetrix arenosa: Tetrix arenosa angusta (Hancock, 1896) Tetrix arenosa arenosa Burmeister, 1838 "Tetrix arenosa Report". Integrated
Tetrix_arenosa
Three-dimensional fractal
sponge. One of the MegaMengers, at the University of Bath A model of a Tetrix viewed through the center of the Cambridge Level-3 MegaMenger at the 2015
Menger_sponge
Species of bird
bird in the grouse tribe. It is closely related to the black grouse (L. tetrix). As with many gamebirds, the cock (male) is larger than the hen (female)
Caucasian_grouse
Group of large game birds
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Peafowl
Construction kit for building robots
Cubelets Lego Mindstorms Lynxmotion Qfix robot kit Robotis Bioloid Stiquito Tetrix Robotics Kit WonderBorg Wikibooks has a book on the topic of: Robotics
Robot_kit
Species of moth
Hypochalcia robustella Toll, 1938 Oncocera arduella Bruand, 1848 Palparia tetrix Haworth, 1811 Phycis luridella Schläger, 1848 Phycis bistrigella Duponchel
Hypochalcia_ahenella
British autonomous robotics company
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
Academy_of_Robotics
Geographical region
fareastru.birds.watch. Retrieved June 18, 2020. "Northern Black Grouse (Lyrurus tetrix). Birds of Russian Far East". fareastru.birds.watch. Retrieved June 18,
Russian_Far_East
Suborder of insects
sawfly larvae being eaten more frequently on cool days. Black grouse (Tetrao tetrix) chicks show a strong preference for sawfly larvae. Sawfly larvae formed
Sawfly
Serville, 1838 Pyrgomorphula Kevan & Akbar, 1963 Paratettix Bolívar, 1887 Tetrix Latreille, 1802 Bruntridactylus Günther, 1979 Xya Latreille, 1809 Phasmatidae:
List of Orthopteroid genera containing species recorded in Europe
List_of_Orthopteroid_genera_containing_species_recorded_in_Europe
cygnus) 2004 – White stork (Ciconia ciconia) 2003 – Black grouse (Lyrurus tetrix) 2002 – Black-headed gull (Chroicocephalus ridibundus) 2001 – Eurasian eagle-owl
Bird_of_the_Year_in_Latvia
bush-cricket Metrioptera roeselii Genus: Tetrix Slender Ground-hopper Tetrix subulata Common Ground-hopper Tetrix undulata Genus: Gryllotalpa European mole
List of Orthoptera species of Ireland
List_of_Orthoptera_species_of_Ireland
Robotics competition
additional hardware and a new structural framework under the new name of TETRIX. Then, in the 2015-2016 FTC season, the NXT bricks that were used previously
FIRST_Tech_Challenge
gryllotalpa Cepero's groundhopper, Tetrix ceperoi Slender groundhopper, Tetrix subulata Common groundhopper, Tetrix undulata Large marsh grasshopper, Stethophyma
List of Orthoptera and allied insects of Great Britain
List_of_Orthoptera_and_allied_insects_of_Great_Britain
Plateau straddling eastern Belgium and western Germany
during the spring breeding season of the endangered black grouse (Tetrao tetrix). During the summer there is a risk of fire in the forest area. Boardwalks
High_Fens
Species of bird
Norway The willow ptarmigan often hybridises with the black grouse (Lyrurus tetrix) or the hazel grouse (Tetrastes bonasia) and occasionally with the western
Willow_ptarmigan
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
Boe-Bot
Species of grasshopper
meridionalis Binomial name Paratettix meridionalis (Rambur, 1838) Synonyms Tetrix brachyptera Lucas, H., 1849 Paratettix dorhni (Fieber, 1853) Tettix ophthalmicus
Paratettix_meridionalis
International Lego robot competition
compete on a set challenge. Robots may be pre-built and may use certain TETRIX and MATRIX elements. Teams may use either one MyRIO or KNR controller, or
World_Robot_Olympiad
Ecoregion in East Asia
Oxford University Press. ISBN 9780190208929. "Northern Black Grouse (Lyrurus tetrix). Photo Gallery.Birds of Russian Far East". fareastru.birds.watch. Retrieved
Mongolian–Manchurian grassland
Mongolian–Manchurian_grassland
Common name for a type of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Partridge
Family of Caelifera
originate from the earlier name 'Tettigidae', based on Tettix (synonym of Tetrix), which was preoccupied by Tettigidae (synonym of Cicadidae). Because of
Tetrigidae
British robotics company
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
Active_Robots
Low-latency video compression standard
content produced by digital cameras. A special color transform, called Star-Tetrix, allows for efficient and direct compression of the original RAW sample
JPEG_XS
Monastery in Romania
de mesteacăn, the Romanian name for birch cock or black grouse (Lyrurus tetrix), a wild bird frequently sighted in the woods. The first religious building
Cocoș_Monastery
Cumulus mountain in the Czech Republic
slopes of Studniční hora. Studniční hora is home to black grouse (Lyrurus tetrix), which is an endangered and protected species of bird within the Czech
Studniční_hora
Traditional Scots headgear
cockade and the regimental cap badge surmounted by a blackcock (Tetrao tetrix) feather. This last is a tradition taken from the Royal Scots and King's
Glengarry
Sculpture and observation tower in Germany
the region's industrial era. The design is reminiscent of the Sierpinski tetrix: placing four half-size tetrahedra corner to corner and adding an octahedron
Tetrahedron_in_Bottrop
Genus of Caelifera
Bolívar, 1887 Species: H. lucifer Binomial name Holocerus lucifer (Serville, 1838) Synonyms Tetrix lucifer Serville, 1838 Holocerus taurus Rehn, 1930
Holocerus
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Golden_pheasant
Former Dutch munitions manufacturer
for the last 200 employees. In the old mansion workshop at Zaandam, the Tetrix training center was established in the old Artillerie Inrichtingen masonry
Artillerie-Inrichtingen
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
The_Robotic_Workshop
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Indian_peafowl
"Legend (Bizarrap remix)" "Escalera Real (Bizarrap remix)" (with Kódigo) "Tetrix (Bizarrap remix)" (with Jeeiph) 2018 "Buho (Bizarrap remix)" "Amorfoda (remix)"
Bizarrap_discography
Ptarmigan, Lagopus muta Capercaillie, Tetrao urogallus (I) Black grouse, Tetrao tetrix Grey partridge, Perdix perdix Pheasant, Phasianus colchicus (I) Quail, Coturnix
List_of_birds_of_Scotland
Educational robotics set
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
Qfix_robot_kit
Protected area in Buckinghamshire, England
Invertebrates include the rare black hairstreak butterfly and ground-hopper tetrix subulata. There is access by footpaths from Calvert. Some areas have notices:
Sheephouse_Wood
Subfamily of grasshoppers
Pseudosystolederus Günther, 1939 Rectitettix Devriese, Nguyen & Husemann, 2023 Tetrix Latreille, 1802 Tettiella Hancock, 1909 Thibron Rehn, 1938 Aalatettix Zheng
Tetriginae
Non-reproductive sexual behavior in non-human animals
have been observed copulating with seals. Male grasshoppers of the species Tetrix ceperoi often mount other species of either sex and even flies, but are
Non-reproductive sexual behavior in animals
Non-reproductive_sexual_behavior_in_animals
Nature park in the Czech Republic
was founded in 2005, because of the population of black grouse (Lyrurus tetrix) and other endangered bird species within it. The nature park východní Krušné
Eastern Ore Mountains Nature Park
Eastern_Ore_Mountains_Nature_Park
Biogeographic region in eastern Russia
bonasia), Siberian grouse (Falcipennis falcipennis), black grouse (Lyrurus tetrix), western capercaillie (Tetrao urogallus), black-billed capercaillie (Tetrao
East_Siberian_taiga
Order of heavy-bodied ground-feeding birds
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Galliformes
North American genus of large birds
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Turkey_(bird)
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Grey_peacock-pheasant
Western capercaillie Tetrao urogallus Gallo cedrone – A Black grouse Lyrurus tetrix Fagiano di monte – A Rock ptarmigan, Stelvio National Park Western capercaillie
List_of_birds_of_Italy
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Silver_pheasant
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
I-bot
Peat bog in the Czech Republic
alpestris) and azure hawker (Aeshna caerulea). Birds: black grouse (Lyrurus tetrix), bluethroat (Luscinia svecica) and dunnock (Prunella modularis). The Úpské
Úpské_rašelinistě
Caucasian grouse, Lyrurus mlokosiewiczi (E-Caucasus) Black grouse, Lyrurus tetrix Grey partridge, Perdix perdix Reeves's pheasant, Syrmaticus reevesii (I)
List_of_birds_of_Europe
Hunting and dietary habits of the golden eagle
(Tetrao urogallus), supplemented by its cousins, the black grouse (Tetrao tetrix) and the hazel grouse (Tetrastes bonasia). However, in the northernmost
Dietary biology of the golden eagle
Dietary_biology_of_the_golden_eagle
Tribe of birds
Tetrao urogallus Cantabrian capercaillie, T. u. cantabricus Lyrurus – black grouse Caucasian grouse, Lyrurus mlokosiewiczi Black grouse, Lyrurus tetrix
Grouse
Genus of birds
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Junglefowl
Software library for scientific computing
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
Accord.NET
Genus of birds
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Peacock-pheasant
Japanese manufacturer
(Discontinued) I-bot Mindstorms RIS NXT EV3 qfix SRV-1 Stiquito SVS TekBots TETRIX The Robotic Workshop (Discontinued) VEX WonderBorg Software AForge.NET Companies
Tamiya_Corporation
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Lady_Amherst's_pheasant
Genus of Caelifera
Kevan, 1966 Rostella phyllocera (Haan, 1843) – type species (as Acridium (Tetrix) phyllocerum Haan, 1843) Rostella processus (Hancock, 1907) Rostella sumatrana
Rostella
Species of turkey native to (Yucatan Peninsula) Mexico, Guatemala, and Belize
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Ocellated_turkey
Bird in family Phasianidae
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Pheasant
Protected area in Berkshire, England
Limenitis camilla Purple hairstreak Platycheirus scutatus Pyrausta nigrata Tetrix undulata Melanargia galathea Dark green fritillary Hummingbird hawk-moth
Combe Wood and Linkenholt Hanging
Combe_Wood_and_Linkenholt_Hanging
tern (Sterna sandvicensis), a seabird JPL · 8597 8598 Tetrix 2202 T-2 The black grouse (Tetrao tetrix), a large game bird in the grouse family JPL · 8598
Meanings of minor-planet names: 8001–9000
Meanings_of_minor-planet_names:_8001–9000
(2001–2010) Tenet (1996–) The Tenors (2004–) Terror Syndrome (2006–2018) Tetrix (2001–) Thantifaxath (2010–) Theatre of Early Music (2001–) Thee Silver
List_of_bands_from_Canada
Village
such as the Alpine Ibex (Latin: Capra ibex), Black Grouse (Latin: lyrurus tetrix), or even Golden Eagle (Latin: Aquila chrysaetos). The fragile biodiversity
L'Ecot
monkey grasshopper (Psychomastax deserticola) Sierra pygmy grasshopper (Tetrix sierrana) Uvarovitettix transsylvanicus There are 155 species in the order
List of vulnerable invertebrates
List_of_vulnerable_invertebrates
International youth robotics program based in the United States
create a custom kit and control system for FIRST Tech Challenge known as TETRIX. Based around the LEGO Mindstorms NXT "brain" and including secondary specialized
For Inspiration and Recognition of Science and Technology
For_Inspiration_and_Recognition_of_Science_and_Technology
Genus of birds
Lyrurus Temporal range: Early Pliocene to recent Black grouse (Lyrurus tetrix) Scientific classification Kingdom: Animalia Phylum: Chordata Class: Aves
Lyrurus
Houten-Groeneveld, T. Gehrels EUN 5.3 km (3.3 mi) MPC · JPL 8598 Tetrix 2202 T-2 Tetrix September 29, 1973 Palomar C. J. van Houten, I. van Houten-Groeneveld
List of minor planets: 8001–9000
List_of_minor_planets:_8001–9000
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Domestic_turkey
Genus of grasshoppers
occurs in Tibet. Formerly included was Bienkotetrix transsylvanicus (now Tetrix transsylvanica). Cigliano, M. M.; Braun, H.; Eades, D. C.; Otte, D. "genus
Bienkotetrix
Result of crossing species of game birds
Capercaillie or wood grouse (Tetrao urogallus) and black grouse (Tetrao tetrix) in the UK Dusky or blue grouse (Dendragapus obscurus) and common pheasant
Gamebird_hybrids
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Himalayan_monal
Starling-Westerberg, A. (2001). "The habitat use and diet of Black Grouse Tetrao tetrix in the Pennine hills of northern England". Bird Study. 48 (1): 76–89. Bibcode:2001BirdS
List_of_herbivorous_animals
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Temminck's_tragopan
Species of bird of prey
including adults of mallard (Anas platyrhynchos), black grouse (Tetrao tetrix), common pheasant (Phasianus colchicus), common raven (Corvus corax) and
Common_buzzard
Perdix perdix Western capercaillie, Tetrao urogallus Black grouse, Lyrurus tetrix Hazel grouse, Tetrastes bonasia Willow ptarmigan, Lagopus lagopus Order:
List_of_birds_of_Belarus
tangerensis Whitmore, 2011 Sarcophaga telengai (Verves, 1973) Sarcophaga tetrix Whitmore, 2011 Sarcophaga thirionae (Lehrer, 1976) Sarcophaga tricolor Villeneuve
List_of_Sarcophaga_species
Native animals of Finland
food source. Hazel grouse, Bonasa bonasia (common) Black grouse, Tetrao tetrix (common) Western capercaillie, Tetrao urogallus (common) Willow ptarmigan
Fauna_of_Finland
Mountain in Slovenia
small rise near its growing place. Boč is home to the only known Slovenian Tetrix transsylvanica population. List of caves on Bočko pogorje "27: Trail to
Boč
Class of insects in Linnaeus' System Natura
carinatus – Porthetis carinata Gryllus bipunctatus – Tetrix bipunctata Gryllus subulatus – Tetrix subulata Gryllus gryllotalpa – Gryllotalpa gryllotalpa
Coleoptera in the 10th edition of Systema Naturae
Coleoptera_in_the_10th_edition_of_Systema_Naturae
Family of birds
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Phasianidae
Genus of birds
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Phasianus
Species of pheasant
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Great_argus
Species of bird
cantabricus) Black-billed capercaillie (T. urogalloides) Lyrurus Black grouse (L. tetrix) Caucasian grouse (L. mlokosiewiczi) Tetrastes Hazel grouse (T. bonasia)
Green_pheasant
TETRIX
TETRIX
TETRIX
TETRIX
Boy/Male
Tamil
Body strength
Boy/Male
Indian, Sanskrit, Tamil
Immortal Everlasting
Girl/Female
Greek American
Myrtle.
Boy/Male
Sikh
One with three eyes, Shiva
Biblical
countries; without water
Boy/Male
Christian & English(British/American/Australian)
Peaceful
Girl/Female
American, British, Christian, English, German, Greek, Irish, Swedish
Pure; Torture; Clean; Virginal
Girl/Female
Latin American
Woman of Sidon (ancient city).
Male
English
Anglicized form of Hebrew Elyaqiym or Greek Eliakim, ELYAKUM means "God will establish."
Girl/Female
Hindu, Indian, Marathi
Parrot
TETRIX
TETRIX
TETRIX
TETRIX
TETRIX
n.
The male of the European black grouse (Tetrao tetrix, Linn.); -- so called by sportsmen. The female is called gray hen. See Heath grouse.