Breeding biology of the Lesser Grass-Finch (Emberizoides ypiranganus) in southern Brazilian upland grasslands

摘要: ABSTRACT We studied the breeding biology of Lesser Grass-Finch (Emberizoides ypiranganus), a bird with little-known life history, in upland grassland Atlantic Forest (Mata Atlântica) Biome southern Brazil. collected data for 93 nests over two seasons (2012–2014). assessed how some covariates influence daily survival rates and affect nest survival, building models Program MARK. Breeding begins early October, peaks late November, continues until March, lasting approximately 150 days. The mean size territories was 1.1 ha, located burned areas were smaller than those unburned areas. Only females build small open-cup nests, clumps grass (mainly composed Andropogon lateralis, Schizachyrium tenerum Sorghastrum setosum) at 36.2 cm above ground. clutch is three (67%) or eggs (n  =  52), laying occurs on consecutive Incubation performed by female lasts 13.7 mea...