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BiologyMeadowlarks are often seen walking about in the open or perching on fences or clumps of grass (5). The diet is thought to include seeds, shoots and insects (2) (3), and may comprise mainly insect larvae when feeding young (3). The pampas meadowlark nests in groups, which range in size from around 2 to as many as 66 breeding males (4). The male meadowlarks maintain small territories (6), which are also defended against neighbouring white-browed blackbirds (3). Males perform a regular and conspicuous display, perching on low tufts of grass to sing, and singing while making an ascending flight (3) (6). Breeding occurs from November to December, and the nest is built on the ground, concealed under a tuft of grass (4) (6). The nest itself is cup-shaped, constructed mainly from grass, and the nests of the group are usually arranged in a cluster (7). Three to four eggs are laid (2) (7), but in one study around half of all nests suffered predation (7).