Rufous-bellied antwren Rufous-bellied antwren The rufous-bellied antwren ("Isleria guttata") is a species of bird in the family Thamnophilidae. It is found in Brazil, French Guiana, Guyana, Suriname, and Venezuela. The bird's range is in the entire north of the Amazon Basin, from Venezuela in the west to the Brazilian state of Amapá to the east, but is not found south of the Amazon River. Its natural habitat is subtropical or tropical moist lowland forests. The rufous-bellied antwren was described and illustrated by the French ornithologist Louis Vieillot in 1824 and given the binomial name "Myrmothera guttata". The current genus "Isleria" was introduced
Suriname the Atlantic coast. The southernmost borders with French Guiana and Guyana are disputed by these countries along the Marowijne and Corantijn rivers, respectively, while a part of the disputed maritime boundary with Guyana was arbitrated by a tribunal convened under the rules set out in of the United Nations Convention on the Law of the Sea on 20 September 2007. Lying 2 to 5 degrees north of the equator, Suriname has a very hot and wet tropical climate, and temperatures do not vary much throughout the year. Average relative humidity is between 80% and 90%. Its average temperature ranges from