Guayaquil woodpecker

The Guayaquil woodpecker (Campephilus gayaquilensis) is a distinctive member of the woodpecker family, scientifically classified within the subfamily Picinae. This species, formerly placed in genera like Scapaneus and Phloeoceastes, is now firmly established in the genus Campephilus.

Physical Characteristics

Measuring between 32 to 34 cm (13 to 13 in) in length and weighing approximately 230 to 253 g (8.1 to 8.9 oz), the Guayaquil woodpecker is a substantial bird. Both sexes share black upperparts from the neck to the upper back, with the lower back and uppertail coverts featuring whitish buff and blackish barring. A notable feature is the white stripes on the sides of the neck that extend onto the upper back, often meeting in a "V" shape. The wings are brownish-black to black, with flight feathers showing brown coloration and small cinnamon or buff spots. The underside of the wings is white with brown tips and pale cinnamon bases.

Adult males are easily identified by their entirely red heads. Adult females, in contrast, lack the male's distinct head color and instead possess a wide creamy stripe edged with black, running from the bill to the ear coverts, which then bends down to meet the white neck stripe. The bill is described as a long, grayish chisel with a paler mandible, the iris is pale yellow, and the legs are gray-brown to greenish gray. Juveniles bear a resemblance to adults but exhibit less barring on their rump and underparts; juvenile males have heads similar to adult females, while juvenile females show more black than their adult counterparts.

Distribution and Habitat

The Guayaquil woodpecker's range extends across southwestern Colombia's Cauca Department, south through Ecuador west of the Andes, and into northwestern Peru's Department of Cajamarca. Its preferred habitats are the interior and edges of dry to humid deciduous forests, as well as mature secondary forests. Elevations inhabited by the species vary, reaching up to 1,100 m (3,600 ft) in Colombia and 1,500 m (4,900 ft) in Ecuador and Peru, though typically found below 800 m (2,600 ft) in the latter two countries.

Behavior and Ecology

This species is a year-round resident within its established range. Guayaquil woodpeckers are often observed foraging in pairs, typically high in the forest canopy. While their specific diet has not been extensively documented, it is presumed to be similar to that of the closely related crimson-crested woodpecker, likely consisting of insects and larvae extracted from wood.

Vocalizations and Drumming

The characteristic call of the Guayaquil woodpecker is a "liquid, rolling "kwi-kwi-kwe-rrrrrrr"". When agitated or excited, they produce "kwik-kwik-kwikerrr" and "kik-kwiddit" notes. Their drumming pattern is a distinct one-second roll composed of 4–7 strikes, with the initial strike being loud and forceful, followed by progressively weaker ones.

Breeding and Conservation

The breeding season for the Guayaquil woodpecker is not precisely defined but has been noted to include at least October and May. Little else is publicly known regarding its breeding biology. The International Union for Conservation of Nature (IUCN) has assessed the Guayaquil woodpecker as Least Concern. Despite an estimated population of at least 25,000 mature individuals, this population is believed to be decreasing. The primary threat to the species is habitat loss and fragmentation due to agricultural expansion and ranching. However, the Guayaquil woodpecker demonstrates a notable tolerance for habitat degradation and fragmentation. The species is present in several protected areas across Ecuador and Peru, which aids in its conservation.