Breeding Location:
Seashore, rocky or sandy
Breeding Type:
Monogamous, Colonial
Breeding Population:
Fairly common, but local
Egg Color:
Buff to pale green with black, gray or brown marks
Number of Eggs:
1 - 3
Incubation Days:
20 - 25
Egg Incubator:
Both sexes
Nest Material:
Lined with shell fragments and grass.
Migration:
Migratory
Recommended Products:
Overview
Least Tern: Small tern, slate-gray upperparts, white underparts. Crown, nape are black and forehead is white. Black leading edge of outer wing conspicuous in flight. Tail is forked. Bill and feet are yellow. Fast smooth flight with rapid wing beats. Hovers briefly before dipping down to sieze prey.
Range and Habitat
Least Tern: Breeds along California coast, along rivers in Mississippi Valley, and coastally from Maine south to Florida and the Gulf coast. Spends winters from Baja California south to southern Mexico; also along coasts of South America. Preferred habitats include broad, level expanses of open sandy or gravelly beach, dredge spoil and other open shoreline areas, and more rarely, inland on broad river valley sandbars.
Breeding and Nesting
Least Tern: One to three buff to pale green eggs marked with black, gray or brown are laid in a scrape in sand, shells, or gravel and lined with small shells or other debris. Incubation ranges from 20 to 25 days and is carried out by both parents.
Foraging and Feeding
Least Tern: Feeds on small fish; forages by skimming the water surface or diving from the air.
Vocalization
Least Tern: Call is a sharp, penetrating "kip-kip-kip" or shrill "zreep."
Similar Species
Least Tern: Black Tern has dark gray upperparts and tail and is entirely black below.
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