User:OpalOsprey/sandbox

Description
The boat-billed heron grows to about 54 cm long. Adult boat-billed herons are pale grey to white in color, with chestnut colored abdomens and black flanks. The massive broad scoop-like bill, which gives rise to this species' name, is mainly black. They are also adorned with a crest which is thought to be used in mate attraction as they are larger in males. The sexes are similar in appearance, the main differences being that females are slightly smaller, grayer in appearance, and have shorter crests than males. Newly hatched nestlings have green-yellow skin, with their upperparts covered in gray down feathers. Their upper bill is black and they have green-yellow legs. Juveniles are darker in color than adults and lack a crest.

Distribution and Habitat
Boat-billed herons range from Mexico to Peru, Brazil, northeastern Argentina. They are non-migratory birds that tend to live in seasonal lagoons and estuaries, and will nest in mangroves.

Diet
Boat-billed herons feed on shrimp and small fish such as Dormitator latifrons, a species of sleeper goby. They tend to forage in vegetative streams, shallow water, and lagoons. When foraging in streams they will use low hanging branches and mangrove roots to stand over the water. In ponds they will walk slowly through the water up to 10 cm deep or will forage near the water’s edge. In order to capture prey they will lunge at fish or scoop the surface of the water with their bills which are uniquely shaped for this method of capture. Additionally, they have been observed using two different feeding techniques; standing and slowly stalking prey, or disturbance of the water, followed by chasing prey. Boat-billed herons will forage nocturnally, and have been seen leaving the roost 30 minutes after sundown to feed. It has been observed that they do not feed when a light source is present such as daylight, moonlight, or artificial light. One study hypothesized that in order to forage for food in the dark and in shallow, muddy water, their bills are sensitive to touch which helps them feel for their prey.

Breeding
Boat-billed Herons breed during the rainy season and have been recorded producing two clutches during this time, laying their first clutch in February during the end of the dry season. Their clutch sizes range from 2 to 4 eggs, with more eggs being laid during the first nesting period than the second. They usually nest in colonies but have been observed nesting solitarily. Human disturbance can lead to a decrease in reproductive success as herons tend to avoid human contact and will abandon nests if necessary.