The red warbler (Cardellina rubra) is a small songbird of the New World warbler family Parulidae. It is endemic to the highlands of Mexico, north of the Isthmus of Tehuantepec.
The red warbler is a small bird, about 5 inches long. It has a grayish-brown back and wings, and a bright red breast and belly. The male has a black head, while the female has a brown head.
The red warbler is a common bird in the highlands of Mexico. It is found in pine-oak forests, cloud forests, and other montane habitats. The red warbler is an insectivore, and its diet consists of insects, spiders, and other small invertebrates.
The red warbler is a migratory bird. It winters in southern Mexico and Central America. The red warbler is a vocal bird, and its song is a series of high-pitched whistles.
The red warbler is a relatively common bird, but its population is declining. The main threats to the red warbler are habitat loss and fragmentation, and climate change.
