Stripe-headed Sparrow

Stripe-headed Sparrows are common in the lowlands of southwestern Mexico south through Central America to Costa Rica. As you travel south, Stripe-headed Sparrows become larger and brighter. The song consists of "dry thin notes" and also a trill and a series of double notes. Flocks of family groups of up to 7 birds inhabit brushland (Wikipedia). This photo was taken when I was a teenager in Mexico in the 1960s.