Data from: Interspecific geographic range size–body size relationship and the diversification dynamics of Neotropical Furnariid birds

Among the earliest macroecological patterns documented, is the range and
body size relationship, characterized by a minimum geographic range size
imposed by the species' body size. This boundary for the geographic
range size increases linearly with body size and has been proposed to have
implications in lineages evolution and conservation. Nevertheless, the
macroevolutionary processes involved in the origin of this boundary and
its consequences on lineage diversification has been poorly explored. We
evaluate the macroevolutionary consequences of the difference (hereafter
the distance) between the observed and the minimum range sizes required by
the species' body size, to untangle its role on the diversification
of a Neotropical species-rich bird clade using trait-dependent
diversification models. We show that speciation rate is a positive
hump-shaped function of the distance to the lower boundary. The species
with highest and lowest distances to minimum range size had lower
speciation rates, while species close to medium distances values had the
highest speciation rates. Further, our results suggest that the distance
to the minimum range size is a macroevolutionary constraint that affects
the diversification process responsible for the origin of this
macroecological pattern in a more complex way than previously envisioned.