Blue-Black Grassquit (Volatinia jacarina) lives in open grasslands across Mexico, Central America, South America, Trinidad and Tobago. Its conservation status is Least Concern.
Fascinating facts about the Blue-Black Grassquit
- A male blue-black grassquit can fit on a ruler: it measures just 8.7-10.9 cm (3.4-4.3 in) long and weighs only 8-12 g (0.28-0.42 oz). Its tiny body carries a longish conical bill and glossy black plumage with a hidden white shoulder patch that flashes only in flight.
- During breeding, a male defends a territory as small as 13.0 m² and as large as 72.5 m² (140-780 sq ft), then launches a "johnny jump-up" display, leaping two feet or more straight into the air while flashing his white shoulder patches. This explosive leap, repeated every few seconds, not only attracts mates but also draws predator attention, raising nest predation risk.
- The species' range stretches from southern Sonora in Mexico down through every mainland South American country, plus Trinidad, Tobago and Grenada, covering an estimated 50 million mature individuals. Its population is increasing, earning an IUCN status of Least Concern. Such a massive, growing population shows the bird's adaptability to a wide array of habitats, from lowland grasslands to elevations up to 2,600 m in some regions.
- Blue-black grassquits feed mainly on seeds of Paspalum and Panicum grasses, but will also take small insects and berries. They forage on the ground, often in pairs during breeding and in mixed flocks the rest of the year. This diet ties them tightly to open, disturbed habitats like pastures and agricultural fields, where their granivorous habits can occasionally cause minor crop losses.
- The bird inhabits a surprising variety of environments: from second-growth scrub and low seasonally wet grasslands to arid lowland scrub, pastures, riparian thickets, and even cloud forests up to 2,600 m. This flexibility lets it occupy both sea-level fields and high-elevation slopes, demonstrating how a single species can bridge tropical savanna, scrub, and montane ecosystems across the Neotropics.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeMexico, Central America, South America, Trinidad and Tobago
HabitatOpen grasslands
DietSeeds and insects
About the Blue-Black Grassquit
In the sun-drenched savannas, the Blue-Black Grassquit dances with an air of unassuming elegance, its iridescent feathers glimmering like polished onyx as it flits between the tall grasses with a soft, melodic song. With each delicate step, it weaves a subtle tapestry of movement, its slender legs barely touching the ground as it searches for the ripest seeds and tender shoots to sustain its lively spirit. As it alights upon a swaying blade of grass, the grassquit's dark plumage seems to drink in the light around it, rendering it all but invisible, a fleeting shadow in the vibrant landscape.
Hear the Blue-Black Grassquit, and 4,400+ more
Real recorded sounds, 11 nature games and a free Daily 5, 1v1 quiz duels, conservation wins and a safe Kids mode. Free on Feravox.
