The blue-black grassquit (Volatinia jacarina) is a small bird in the tanager family, Thraupidae. It was previously classified in the bunting and American sparrow family, Emberizidae. It breeds from southern Mexico through Central America, and South America as far as northern Chile, Argentina and Paraguay, and on Trinidad and Tobago. It is the only member of the genus Volatinia.

Adult blue-black grassquits are 10.2 cm (4.0 in) long and weigh 9.3 g (0.33 oz). They have a slender conical black bill. The male is glossy blue-black, with a black tail and wings; the white inner underwing is visible in flight or display. Female and immature birds have brown upperparts and dark-streaked buff underparts.

The male has a jumping display, often performed for long periods, which gives rise to the local name "johnny jump-up". This is accompanied by a persistent wheezing jweeee call.

This is a common bird in semi-open areas, including cultivation and gardens. It makes a small cup nest, with a typical clutch of one to three pale green eggs blotched with reddish brown. Both sexes incubate for 9–10 days, with about the same period again for the young to fledge.

The blue-black grassquit feeds mainly on seeds. It is quite gregarious and forms communal evening roosts.
Blue-black Grassquit
Date Location Count
2020-06-24 08:15Reserva de la Biosfera Ría Lagartos8
2020-07-08 06:02Cenote Camino a Dzonot Carretero6
2020-07-06 07:20Carretera 295/Río Lagartos-Tizimín--Pantano a Km 9014
2020-07-10 19:33Ejido San Felipe4
2020-06-15 07:00Tizimin (pueblo)2
2020-07-12 10:23Louisville Lagoon area1
2020-06-14 10:58Louisville--RBSP2
2020-06-14 10:10Louisville--dump site1
2020-06-29 18:41Little Belize4
2020-07-10 07:05Crooked Tree Wildlife Sanctuary1
2020-06-14 07:40Philip Goldson Hwy--Biscayne4
2020-06-26 17:39Lamanai Outpost Lodge & Indian Church1
2020-07-11 17:51Indian Creek Village (Orange Walk)3
2020-07-08 04:13Gallon Jug--Laguna Verde1
2020-07-09 05:44Gallon Jug7
2020-07-12 05:52Monkey Bay Wildlife Sanctuary1
2020-07-05 17:54BWSL Ponds1
2020-06-27 13:55Spanish Lookout rice fields12
2020-06-17 06:21River Wildlife Sanctuary1
2020-06-29 05:34St. Herman's Blue Hole NP1
2020-06-25 05:22Aguacate Lagoon1
2020-07-11 07:37Spanish Lookout--gravel pit (private)2
2020-06-21 16:03Spanish Lookout--Countryside Park4
2020-06-16 05:37Spanish Lookout (community)9
2020-07-04 18:22Baking Pot Ferry--Spanish Lookout Ferry Crossing2
2020-06-20 14:37Baking Pot Archaeological Site2
2020-07-03 15:48San Ignacio Hospital Road Wetland3
2020-07-05 06:56Cockscomb Basin Wildlife Sanctuary--access road2
2020-06-14 13:58Mai Farm2
2020-07-05 11:52Belize Botanic Gardens & duPlooy's Jungle Lodge1
2020-07-01 05:57Black Rock Road5
2020-06-28 07:16Xunantunich-San Jose Succotz ferry1
2020-07-05 05:12Black Rock Lodge4
2020-06-28 10:03Xunantunich Maya site5
2020-07-12 06:55Chapel Hill Road5
2020-06-24 13:55Santa Elena--Colonia Satélite4
2020-07-06 17:30Santa Ana--sendero Ligorría6
2020-07-08 11:38Finca San Francisco2
2020-06-28 05:00San Jose Village2
2020-06-17 17:00Hopeville1
2020-07-05 06:21The Farm Inn2
2020-06-27 17:00Santa Cruz Village (Toledo)3
2020-07-10 08:00Indian Ville Extension, Reymundo Home1
2020-07-12 07:14Residencial Santa Mónica (Acceso Restringido)1
2020-07-11 10:43Finca Villa Julia (Acceso Restringido)2
2020-07-06 09:13Cooperativa La Técnica Agropecuaria1
2020-07-04 07:00Reserva Comunitaria El Cartón (acceso restringido)1
2020-06-14 18:52Cascada Misol-Ha4
2020-06-21 07:58Reserva Natural Privada Luna del Puente2
2020-06-15 09:11PN Azul Meámbar--Sendero La Naturaleza (zona de amortiguamiento)6
2020-06-13 13:56PANACAM--Centro Turístico El Trópico [Zona de Amortiguamiento]2
2020-06-13 10:11Siguatepeque--Sector Cruz Grande5
2020-07-04 15:40Bosque de Pino de la Unacifor (Acceso restringido)16
2020-06-22 06:26Lagunas De Oxidación, La Paz2
2020-07-12 05:51Aldea Salacuim1
2020-06-25 09:33AquaParque El Yate (Depto. Copán)3
2020-07-12 07:15Zamorano Univ.--CZB parche bosque 9.5 ha, Quebrada el Gallo en Florencia 26
2020-07-12 06:15Zamorano Univ.--Zona 2 Agricultura Intensiva Ruta Monitoreo9
2020-07-04 07:24Carretera hacia Laguna El Pedregal1
2020-07-12 09:25Zamorano Univ.--Campus Farms and River 740-815 msnm4
2020-06-28 07:52Laguna El Pedregal3
2020-06-21 06:15Carretera al Nor-oeste de Rancho Ebenezer1
2020-07-11 06:10Rincón de Dolores2
2020-07-07 07:43RNP Chajbaoc2
2020-07-01 06:46El Jardín de Lety (acceso restringido)1
2020-06-29 16:15Poza del Lagarto4
2020-06-30 07:07SFF Setonq (acceso restringido)2
2020-06-21 15:45Finca Chichen--camino de entrada a Finca Rubel Chaim (acceso restringido)2
2020-07-07 17:03Finca Rubel Chaim (acceso restringido)1
2020-06-27 10:35Hotel Posada El Guardabarranco1
2020-07-12 06:50Camino del Ejido Juárez (desvío km 21 +600 carretera Tuxtla-Chicoasén)5
2020-06-26 13:54Reserva El Jaguar 3
2020-06-14 07:30Mesa del Moropotente2
2020-06-23 08:31Camino a Las Barrancas--Km 0-52
2020-07-03 07:29Lagos de Puente Moreno1
2020-07-11 07:07Río La Antigua—Paso Mariano1
2020-07-05 16:00Río Atliyac--Paso De Ovejas2
2020-07-01 08:00Laguna Miradores20
2020-07-10 08:18Reserva Natural Xocotitla3
2020-07-05 09:17San Rafael Piña (pueblo)1
2020-07-08 09:00Finca El Amate3
2020-06-18 09:03Barranquilla, Universidad del Norte5
2020-07-05 09:27Finca La Gracia1
2020-06-14 16:07Ojo de Agua Tolistoque1
2020-07-04 09:27Reserva Privada Concepción de María1
2020-07-06 10:00Jardín Etnobotánico Francisco Peláez Roldan1
2020-07-04 09:31Zona Arqueológica Yagul1
2020-06-16 08:13Hotel Mirador Pizote2
2020-06-24 10:14PN Volcan Tenorio--Rio Celeste Trail1
2020-06-28 07:10Catarata Bijagua1
2020-06-26 05:15Comandancia de Sarapiquí Road2
2020-07-08 14:30La Selva (OTS Reserve)--entrance road2
2020-06-19 05:17Canaan Farm4
2020-06-19 05:16Tirimbina Rainforest Center2
2020-07-10 06:57Las Arrieras Bird Observatory2
2020-07-01 06:08Arenal Oasis Eco Lodge4
2020-07-01 08:45Rainforest Chocolate Tour3
2020-06-20 07:10Bosques de San Andrés de la Cal
2020-06-23 05:21El Congal Rainforest2
2020-07-06 16:39Tilarán3
2020-07-12 11:44Las Trancas farm fields (Rt 254 to Playa Panama)1
2020-06-19 06:28Punta de Lanza3
2020-07-12 07:27Bebedero Road2
2020-06-27 05:35San Luis de Grecia8
2020-06-13 08:21Río Silencio (San Ramón)3
2020-06-14 05:14Selva Bananito Lodge1
2020-06-17 05:45Lomas Verdes1
2020-07-04 06:50UNA--Finca Experimental Santa Lucía4
2020-07-11 07:59UNA--Centro Recreativo5
2020-06-27 10:04Turrialba--Aquiares1
2020-06-13 06:10Parque Recreativo Municipal Los Chorros3
2020-06-30 15:15CATIE2
2020-07-08 14:01Alto Barrantes, Santiago18
2020-06-14 09:36San Antonio de Platanillo--near Rancho Naturalista2
2020-06-20 06:12Rancho Naturalista--Cerro El Silencio1
2020-06-17 06:25Hotel Quelitales2
2020-06-24 14:36Finca Cristina2
2020-07-03 05:55El Rodeo--Camino a Piedras Negras5
2020-06-22 05:23Sanchiri Mirador and Lodge1
2020-07-08 05:31Represa Chucás2
2020-06-25 06:08Puente Purisil1
2020-06-20 06:53RF Río Macho, Cartago--camino ICE2
2020-07-06 06:50Turubari Park4
2020-07-01 12:00La Ceiba de Orotina4
2020-06-16 07:11Pipeline Road (entrance to Juan Grande creek)1
2020-06-19 05:35Ammo Dump Ponds3
2020-07-07 06:59Tocumen--Hotel Riande Aeropuerto3
2020-07-01 11:30Tocumen International Airport4
2020-06-23 07:15Cerro Lodge entrance road1
2020-06-27 08:22Reserva Monte Alto2
2020-06-23 07:34PN Carara--Puente Río Tárcoles1
2020-07-02 06:14Macaw Lodge1
2020-06-24 16:46Tranquilo Bay Eco Adventure Lodge2
2020-07-04 09:00Redoma de Agua Viva2
2020-07-04 15:50Rinconcito de Macca Bite (original)2
2020-06-25 06:35Playa Guiones1
2020-07-07 08:15Rancho El Destierro3
2020-07-08 13:04Jacó--Humedales Quebrada Bonita1
2020-06-29 05:16Esquipulas (town)2
2020-06-27 07:00Filas de Montemayor--Orillas del Río Cupira3
2020-06-29 06:05Playa Hermosa (Jaco)12
2020-07-11 05:30Portasol living Birder House1
2020-06-26 11:03Cordoncillo de Volcán1
2020-07-04 07:16Alto Salitre savanas (rd up to Dúrika)12
2020-07-04 11:43Finca Maritima (Playa El Rey) rice fields4
2020-06-29 05:25Platanillo de PZ1
2020-07-12 07:43Jardín Botánico de Caracas2
2020-06-14 07:50PN El Ávila--Estribo de Duarte2
2020-06-21 06:19Rio Baru--river mouth3
2020-06-19 09:44PN El Ávila--La Julia1
2020-07-12 10:51Altos del Maria--Paseo Florencia2
2020-07-06 08:01Paso Ancho (area general)9
2020-07-04 08:40Hnos. Mayor, La Lagunita (Caracas)1
2020-07-08 09:15Urb La Haciendita1
2020-07-10 08:25Embalse de Taiguayguay1
2020-07-11 08:41Volcán1
2020-07-08 05:35Sierpe--Finca 6 archaeological site (Museo Nacional)2
2020-07-05 07:30Finca Cantaros1
2020-07-08 16:10Sabanas de Coclé--Carretera a El Gago10
2020-07-02 07:32Sierpe--Canal estero azul
2020-07-08 06:45Caldera4
2020-06-13 09:15Carretera a Juan Hombrón2
2020-07-02 06:45Rio Chiriquí Nuevo Reservoir2
2020-07-03 17:52Cerro Pelón7
2020-06-26 10:09La Gamba2
2020-06-20 05:29Ciudad Neily rice fields south of Hospital12
2020-07-05 12:56Coto 47--Las Pangas6
2020-07-01 08:30Sendero del Estanque y Cementerio1
2020-06-20 08:44David3
2020-07-11 15:48Camino Rio Corucha2
2020-06-13 07:34Playa La Barqueta--Pantanos5
2020-06-13 08:25Playa La Barqueta--Quebrada Guásimo2
2020-07-09 06:07La Sagesse Beach2
2020-07-12 13:15La Sagesse Salt Pond1
2020-06-25 15:24Playa El Arenal1
2020-07-10 08:21PN Barranca de Oblatos-Huentitán--Sendero Barranca Huentitan9
2020-06-26 14:08Arrierito Antioqueño ProAves Reserve2
2020-07-01 16:23Finca Los Colibries, Yarumal2
2020-06-20 17:00Blanchisseuse Beach & N. Coast Road4
2020-07-05 16:51Mount St. Benedict4
2020-06-13 06:15Lalaja Road8
2020-06-20 07:09Caroni Bird Sanctuary visitor centre1
2020-06-28 06:41Grand Riviere--Monte Video Road2
2020-07-11 08:00Caroni Rice Fields15
2020-06-27 14:55Cacandee2
2020-07-04 06:14Orange Valley2
2020-06-29 05:20Aripo Savannah--Cumuto Road2
2020-06-14 06:53Camino al Cocodrilario1
2020-06-14 05:50Cat's Hill20
2020-06-18 07:08Sendero La Herrera1
2020-06-25 06:36Parque La Colorado1
2020-06-22 07:25El Sutú--Camino San Antonio2
2020-07-10 07:25El Sutú--Camino Costa Rica2
2020-06-18 16:23IE Cañaveral, Sede Marco Fidel Suárez, La Pradera, Victoria Caldas, CO1
2020-07-11 06:11Microcuenca El Congal1
2020-07-01 06:00Marquetalia4
2020-07-01 06:29Alegrías3
2020-07-09 06:10Vereda La Primavera3
2020-07-09 05:40Hotel Tinamú Birding Nature Reserve1
2020-06-22 08:17Taparas (AICA CO203)2
2020-06-19 06:41Ranita Dorada ProAves Reserve3
2020-07-11 08:06Distrito de Manejo Integrado Guasimo
2020-06-22 07:13RN Cauquitá2
2020-07-04 05:30Reserva Biológica Los Carpinteros2
2020-07-01 06:38Vereda Volcanes2
2020-07-04 06:27Cartago, Parque De La Salud1
2020-06-20 06:10Vereda La Revancha2
2020-07-04 06:30Vereda Pisamal3
2020-06-19 09:34Complejo Lagunar - Llano del Combeima5
2020-06-27 06:00Club Campestre El Bosque1
2020-07-10 06:30Finca La Laguna2
2020-06-13 07:15RN Rio Bravo--Entrada1
2020-07-09 06:17Finca Ronda Gyrola2
2020-06-29 06:24Alto Anchicayá - El Descanso (Doña Dora)1
2020-07-08 06:20Bosque de Niebla Km. 184
2020-06-23 17:05Ecoparque de La Bandera1
2020-07-01 17:11Reserva De La Sociedad Civil Chorro De Plata2
2020-07-04 07:00Arrozales de Jamundí4
2020-06-27 16:00Parque Jardín Botánico de Neiva 'Bertha Hernández de Ospina'2
2020-07-02 07:00Laguna El Juncal6
2020-07-11 09:10Reserva Amalaka6
2020-06-15 06:43Finca Marengo1
2020-07-03 08:15Laguna El Vaticano2
2020-07-02 06:00Vereda Pueblo Viejo2
2020-07-10 16:30Mocoa, Finca Aracari8
2020-07-04 07:00Reserva Amagusa1
2020-07-12 11:46Maquipucuna--road1
2020-07-08 10:00La Brisa (hummingbird feeders)2
2020-06-21 12:53Gareno-Chonta Road2
2020-06-23 16:52Misahualli2
2020-06-13 06:00Saint-Jean (Saint-Laurent-du Maroni)20
2020-07-01 01:42Sabanilla2
2020-06-22 17:22Bosque Protector Cerro Blanco1
2020-07-11 07:50Rancho Alemán3
2020-06-20 07:23Manglares-Churute--La Lagartera41
2020-07-01 14:27Roche Corail3
2020-07-08 15:53Carapa de Kourou1
2020-06-17 11:24Port de Paricabo2
2020-07-05 07:45Vieux Bourg de Kourou2
2020-06-19 17:10Route du Dégrad Saramaca--piste pK 1110
2020-07-11 08:48Route de Guatemala4
2020-07-03 07:39Piste en U1
2020-07-02 09:42Route de Guatemala--grandes pâtures1
2020-07-02 10:13Guatemala--Crique Trésor et corridor boisé2
2020-07-04 09:25Chemin de Saut Léodate2
2020-07-04 16:45Paquisha--vicinity1
2020-06-14 11:59Embarcadero Rumococha2
2020-07-05 07:30Puerto Minero/La Herradura--Vicinity3
2020-06-20 06:00Parque Ecológico Mundo Amazónico2
2020-06-25 06:30Serra do Navio1
2020-06-25 06:09Loma de Las Perdices2
2020-06-13 07:48APA Lago do Amapá4
2020-06-19 14:18Parque Instituo Geofisico del Peru1
2020-07-11 11:00Río Lurín-- Desembocadura4
2020-06-20 06:38Riberalta--Hamburgo3
2020-06-25 11:21Riberalta--Pampa San Lorenzo North5
2020-07-05 11:00Lomas de Mala1
2020-06-16 11:15Catarata de Mandor2
2020-07-11 14:45Estancia Bello Horizonte1
2020-06-25 09:57Resex Rio Cautario--Ouro Fino
2020-07-11 06:05Água Azul do Norte--área geral2
2020-07-01 06:47Chapada dos Guimarães--Vale da Bencão1
2020-06-28 08:58Parque Municipal da Quineira2
2020-06-13 11:00Campina Grande--Açude de Bodocongó5
2020-07-05 15:41Parque Ecológico de Águas Claras1
2020-07-12 07:36Rodovia DF-3305
2020-07-08 06:33Goiânia--Reserva Caraíbas2
2020-07-07 06:26Universidade Federal de Goiás--Campus Samambaia7
2020-06-20 07:13Altiplano Leste2
2020-07-02 16:07Parque Natural Salto do Sucuriú1
2020-07-09 14:03Refugio Ecologico Caiman2
2020-06-25 13:00Lagoa dos Gatos--área geral5
2020-06-13 08:40Feira de Santana--Bairro Asa Branca3
2020-06-14 07:20Feira de Santana--Praça Morada das Árvores2
2020-06-13 07:00Serra do Arrepio2
2020-07-04 09:11Votuporanga--área geral1
2020-07-04 06:43Votuporanga--Horto Florestal de Votuporanga6
2020-06-13 07:54Planura--Buritizal MG-4277
2020-06-21 06:51Presidente Prudente--Rio Santo Anastácio2
2020-06-30 07:07Martinopolis--Represa Laranja Doce3
2020-07-11 15:31Bairro Loteamento Morada do Sol1
2020-06-28 07:14Balneário Municipal de Rancharia4
2020-06-18 10:58Jaboticabal--Mata Ciliar da Fazenda Santa Júlia1
2020-06-20 16:52Jaboticabal--Sítio Velho3
2020-06-26 16:21Jaboticabal--Bairro Residencial Jaboticabal e matas adjacentes1
2020-07-04 15:30Rondon--Reservas Três Placas4
2020-07-11 15:58Asunción--Costanera Norte Parte I1
2020-07-05 15:42São Tomé--Lagoa de São Tomé8
2020-07-05 16:50Tomé--Lagoa Azul8
2020-07-08 09:37Campus - Universidad Nacional de Asunción15
2020-07-09 07:04Playa - Ex Calera San Antonio5
2020-06-21 07:00Reserva Biológica das Perobas2
2020-07-05 10:39Parque Estadual Lago Azul
2020-06-28 07:25Ortigueira--Morro Da Pedra Branca1
2020-06-27 08:00Lindoeste--área geral1
2020-07-04 08:52Bofete--área geral1
2020-07-08Piranga2
2020-06-14 10:10Cachoeira Lamim2
2020-06-21 07:24ARIE Mata de Santa Genebra4
2020-06-14 05:38Elias Fausto--Alambique Pansonato1
2020-07-12 08:24Região da Represa do Mirim2
2020-06-26 10:59Indaiatuba--Sítio São Bento6
2020-06-17 10:00Indaiatuba--Rua Senai2
2020-07-12 07:39Itatiba--Lagoa do Jardim Leonor2
2020-06-13 09:09Epicentro Dalva--área geral2
2020-07-11 09:29Propriedade Bonfá1
2020-07-03 07:14Cabreúva--Estrada da Concórdia38
2020-06-17 16:00Jundiai--Bairro Jundiai-Mirim10
2020-07-03 16:42Parque da Cidade de Jundiaí1
2020-07-04 08:40Serra do Japi--estrada da Ermida5
2020-06-14 09:11Recanto do Rachado
2020-07-10 06:50PNM da Grota Funda1
2020-07-04 07:44Refúgio Das Araucárias
2020-07-05 09:07São Paulo--Bairro Pan-Americano6
2020-06-21 10:41Fazenda Iguaçú - Mangueirinha1
2020-07-09 12:18Estrada de acesso ao PNM doTrabiju1
2020-07-05 07:06Verde Paraíso - Santa Isabel1
2020-06-28 07:11Pindamonhangaba--Lago Azul3
2020-06-27 07:29Mata dos Caetés2
2020-07-12 06:44Sítio Piraquara1
2020-07-12 07:00Santo André--Parque Central7
2020-07-04 08:01Cachoeira do Putim1
2020-07-04 16:15Santa Branca--Mata Casa Logos2
2020-07-05 08:00Represa Taiaçupeba10
2020-06-13 06:12Itanhaém--Chácara Sara1
2020-06-28 08:15Peruíbe--área geral2
2020-06-26 02:01Peruíbe--Mochileiros Hostel e Observação de aves1
2020-07-10 06:19Paraty--Jardim Ponte Branca7
2020-06-13 07:22Pousada Vila Flor/Ornithos Birdwatching1
2020-06-20 09:24Lagoa Vermelha1