Chachalaca

Chachalacas are social birds belonging to the genus *Ortalis*. They are part of a larger group of birds called galliforms.

These birds are known for being very noisy and living in wooded habitats. They can be found in the southern United States, specifically Texas. They also live throughout Mexico and across Central and South America.

Because they are relatively small, they are often less desirable to hunters. This allows them to remain fairly common even when living near humans.

These birds live in organized social groups. They typically travel in packs containing six to twelve individuals.

When it comes to reproduction, chachalacas build very simple nests. These structures are made from sticks, twigs, leaves, or moss. The nests are generally frail and flat in shape. They are usually built only a few feet above the ground. During the month of April, the birds lay their eggs. A single clutch contains between three and five buffy white eggs. These eggs are notable because their shells are very hard and rough.

There are 16 different species within the *Ortalis* genus. Each species lives in a specific part of the Americas.

For example, the Plain chachalaca (*Ortalis vetula*) lives in Texas, Mexico, and parts of Central America. The Grey-headed chachalaca (*Ortalis cinereiceps*) is found from eastern Honduras to northwestern Colombia.

Other species, such as the Chaco chachalaca (*Ortalis canicollis*), live much further south in Argentina, Brazil, and Uruguay.

The variety of species shows how these birds have spread across many different environments.

Humans have studied chachalacas for many years. The German naturalist Blasius Merrem introduced the genus *Ortalis* in 1786. He originally named it *Ortalida*. He used the little chachalaca (*Ortalis motmot*) as the type species for the group.

The scientific name *Ortalis* comes from an Ancient Greek word meaning "pullet" or "domestic hen." The common name "chachalaca" has a different origin. It comes from the Nahuatl verb *chachalaca*, which means "to chatter." This name is an onomatopoeia. It mimics the four-noted cackle that the plain chachalaca makes.

Scientific research provides deep insight into the history of these birds. DNA sequence data from mitochondria and nuclei help scientists understand their evolution. This data suggests chachalacas emerged as a distinct lineage during the Oligocene epoch. This occurred somewhere between 40 and 20 million years ago.

They may have been the very first lineage of modern cracids to evolve. This scientific finding matches what we see in the fossil record. The fossils suggest the family expanded from the north toward the south.

While chachalacas are interesting, they can also be difficult for farmers. They have a ravenous appetite for many types of crops. They are often considered agricultural pests because of what they eat.

They especially enjoy eating tomatoes, melons, beans, and radishes. A group of chachalacas can ravage a small garden in a very short amount of time. Their social nature and large numbers make them efficient at finding and consuming these food sources.

Chachalacas are closely related to other birds in the cracid family. They look somewhat similar to birds called guans. Because of this similarity, scientists often placed the two groups in the same subfamily. However, research shows that chachalacas are actually closer to curassows.

The fossil record for cracids is quite poor. Most of what we know comes from a few specific chachalaca fossils. These include species like *Ortalis tantala* from the Miocene of Nebraska. Other fossils, like *Ortalis affinis*, come from the Pliocene of Kansas. These ancient bones help us trace the long journey of the chachalaca through time.