White-eared ground sparrow

The white-eared ground sparrow ("Melozone leucotis") is a large American sparrow which breeds in a small range of Central America at middle altitudes from southern Mexico and Guatemala to northern Costa Rica. The species range is on the Pacific side of Central America, and Belize (on the Gulf of Mexico) and Honduras are not in its normal range.
This bird is found typically at altitudes between in the undergrowth and thickets of ravines, forest edge, and other semi-open woodland including second growth and large gardens. The nest, built by the female, is a massive bowl of stems, twigs and other plant material constructed on the ground or less than up, and hidden amongst banana plants, orchids or similar cover. The female lays two brown-blotched white eggs, which she incubates for 12–14 days. The male helps in feeding the chicks.
The white-eared ground sparrow is on average long and weighs . The adult has a stubby dark-grey bill and unstreaked olive-brown upperparts. The head is mainly black with a broken white eye ring and white patches in front of and behind the eye. The nape is green and the sides of the neck are bright yellow. The throat and breast patch are black, separated by a thin rufous-grey line, and the rest of the underparts are mainly white with grey on the flanks. Young birds have yellower underparts, and a duller indistinct head pattern.
North Nicaragua birds, "M. l. nigrior", have a much broader black breast spot than the nominate Costa Rican form, and the northernmost of the three subspecies, "M. l. occipitalis", has a grey crown stripe, obvious yellow supercilium, and very small breast spot.
White-eared ground sparrow calls include a thin "tsip". The male's song is an explosive whistled "spit-CHUR see-see-see".
The white-eared ground sparrow feeds on the ground on seeds, fallen berries, insects and spiders. It is usually in pairs, and is a shy species best seen at near or dusk, although easier to find than its skulking relative, Prevost's ground sparrow.