Red-bellied Squirrel (Sciurus aureogaster) lives in tropical rainforest across Southeast Mexico. It feeds on nuts and seeds. Its conservation status is Least Concern.
Hear the Red-bellied Squirrel
A real field recording of the Red-bellied Squirrel, made in the wild.
Two pairs of Mexican gray squirrels were released on Elliott Key in 1938, and within twelve years they had colonized most of the island. Their resilience was tested in 1992 when Hurricane Andrew flooded the Keys under six meters of water, yet the population survived and even spread to nearby islands. This rapid expansion shows how a tiny founding group can become a dominant invasive force, reshaping island ecosystems in just a few decades.
The Mexican gray squirrel sports more than sixty scientific names because its fur can range from pale gray to jet-black, with belly colors from white to deep chestnut. In northern Mexico about 40% of individuals show extensive black coloration, while on the Florida Keys half the squirrels are completely black or gray with a red belly.
Adult male Mexican gray squirrels tip the scales at an average 591.7 g, while females weigh about 562.5 g; a broader study puts the species' mean body mass at 505 g. Their bodies measure 232-310 mm long, and their bushy tails add another 215-284 mm. These compact dimensions enable agile leaps between trees, letting them exploit food sources from the forest floor to the canopy.
Mexican gray squirrels build leaf nests 5-15 m above ground, weaving twigs into a cup and covering it with a dome of leaves. On Elliott Key they use twelve tree species, but 60% of nests are in West Indian mahogany (Swietenia mahagoni). Removal crews have taken down 1,410 nests and 33 squirrels.
A survey on Elliott Key counted 2.47 squirrels per hectare. Males roam an average of 2.3 hectares while females stay within about 0.9 hectare, indicating a pronounced sex-based range difference.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
In the dappled light of the forest, the red-bellied squirrel darts with effortless agility, its bushy tail flicking back and forth like a metronome as it navigates the intricate network of branches with precision and ease. With eyes shining like bright jewels, this tiny, chestnut-hued creature embodies a spirit of restless curiosity, forever probing its surroundings for hidden treasures of nut and seed. As it leaps from bough to bough, the squirrel's very presence seems to embody the vibrant, pulsating energy of the forest itself.
Advertisement
Hear the Red-bellied Squirrel, 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.
