Eastern Meadowlarks (Sturnella magna) are found in a variety of habitats from moist grassland and agricultural areas, to high elevation grassland, and Pine savanna (lowlands of Central America).  It is a highly adaptable bird and one that has a sweet and simple song of two descending whistles.  

The eastern meadowlark is a ground forager, searching for its invertebrate prey while walking or running along the ground, as well as probing beneath the soil with its beak.   

Each male usually pairs with two females, with courtship displays between the pairs including aerial chases and jump-flights.  The female eastern meadowlark is solely responsible for the construction of the nest, which is built on the ground out of grasses woven into surrounding vegetation. 

Despite being relatively common, agricultural practices have led to the degradation of suitable breeding habitat and this species is also sensitive to human encroachment, often abandoning nests if disturbed.  

References:

Eastern Meadowlark (Sturnella magna), In Neotropical Birds Online (T. S. Schulenberg, editor). Cornell Lab of Ornithology, Ithaca, New York, USA. retrieved from Neotropical Birds