Stiltia isabella (Vieillot, 1816)

Taxonomy and Morphological Overview

The Australian pratincole, scientifically named Stiltia isabella (Vieillot, 1816), is a medium-sized slender shorebird with long legs, long pointed wings, and a short decurved bill.

Size Measurements

It measures 19–24 cm (7.5–9.4 in) in length, has a wingspan of 50–60 cm (20–24 in), and weighs 55–75 g (1.9–2.6 oz).

Sexual Dimorphism and Plumage Variation

Males and females look identical, but their breeding and non-breeding plumage differs.

Breeding Plumage Body Coloration

In breeding plumage, the head, neck, breast, and upperparts are a graded sandy brown.

Breeding Plumage Wing and Facial Markings

The pointed wings are black, and a black loral strip is present.

Breeding Plumage Throat and Breast Coloration

The chin and throat are white, and the breast is sandy brown.

Breeding Plumage Soft Parts

The bill is bright red with a black base, the iris is dark brown, and the legs and feet range from grey to black.

Non-breeding Plumage Research Status

Non-breeding plumage is not well understood due to seasonal and individual variation.

Non-breeding Plumage Facial and Bill Features

The loral stripe is fainter than in breeding plumage, and the base of the bill is paler.

Non-breeding Plumage Body Markings

The upperparts are grey-brown with sandy-buff fringes, and dark flecks sometimes appear along the borders of the pale throat.

Juvenile Plumage Base Coloration

Juvenile plumage is similar to that of a non-breeding adult, but it has a slightly paler sandy brown colour.

Juvenile Plumage Head Markings

Juveniles lack black colouring on the lores, and their forehead, crown, and nape are streaked with dark brown.

Juvenile Bill Coloration

The juvenile bill is grey-black with a faint reddish base.

Flight Appearance Upper Body and Wings

In flight, the upper body and inner wing are sandy brown, while the outer wing is black.

Flight Appearance Tail Features

The tail is square-cut, and the upper-tail coverts and sides of the tail are white.

Comparison to Oriental Pratincole Size and Shape

Compared to the oriental pratincole (Glareola maldivarum), the Australian pratincole is slightly slimmer and smaller, with longer legs.

Similar Species Identification Confusion

Worn-plumage juveniles and non-breeding Australian pratincoles can be confused with the oriental pratincole.

General Habitat Types

The Australian pratincole inhabits treeless open plains, sparsely wooded plains, grasslands, claypans, and gibberstone areas, most of which lie in arid and semi-arid rainfall zones.

Wetland-associated Habitats

It can also be found around the margins of wetlands, creeks, river beds, bore drains, lagoons, springs, claypans, and sewage farms.

Breeding Season Habitat

During the breeding season, it lives in low, scattered shrubland, as chicks use this vegetation for hiding and shelter.