Threskiornis spinicollis
Silhouette: PhyloPic
In 3 days ~60% in a week ~90%
The straw-necked ibis (Threskiornis spinicollis) is a bird of the ibis and spoonbill family Threskiornithidae. It can be found throughout Australia, New Guinea, and parts of Indonesia. Adults have distinctive straw-like feathers on their necks.
Straw-necked ibises are large birds, around 59–76 cm (23–30 in) long, with a bare black head and a long, downcurved black bill. They have a distinctive, highly iridescent plumage, which can appear fairly uniform dirty dark brown in indifferent light; the wings are dark, with an iridescent, multicoloured sheen in sunlight. They have a shiny blue-black back, with a metallic purple, green and bronze glow, and a dark collar. The upper neck is white, as are the underparts and the undertail; their legs are usually red near the top and dark grey toward the feet. Adults have straw-colored feathers on the neck, giving the bird its common name. Their wingspan is about 100–120 cm (39.5–47 in) and weight is generally 1.1–1.5 kg (2.5–3.5 lb).
Sexes are similar, although males have longer bills and females have a dark band across their upper breast. Juveniles have duller colors and shorter bills with less curvature, and lack the straw-like... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kakadu National Park | 🇦🇺 Australia | |
| 2 | Litchfield National Park | 🇦🇺 Australia | |
| 3 | Daintree National Park | 🇦🇺 Australia | |
| 4 | Nitmiluk National Park | 🇦🇺 Australia | |
| 5 | Grampians National Park | 🇦🇺 Australia | |
| 6 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 7 | Springbrook National Park | 🇦🇺 Australia | |
| 8 | Great Otway National Park | 🇦🇺 Australia | |
| 9 | Hattah-Kulkyne National Park | 🇦🇺 Australia | |
| 10 | Lamington National Park | 🇦🇺 Australia | |
| 11 | Blue Mountains National Park | 🇦🇺 Australia | |
| 12 | Royal National Park | 🇦🇺 Australia |
Possible
About 30% of wildlife watchers report a Straw-necked Ibis sighting in Litchfield National Park on a given day, based on 124 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 27th most-seen of the 110 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
October
In that month about 50% of wildlife watchers report a Straw-necked Ibis in Litchfield National Park on a given day, against about 10% in April, the lowest month. That is one of Litchfield National Park's driest months, with about 70 mm of rain against 400 mm in January.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Straw-necked Ibis sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 12
Of the 12 parks where we can rate Straw-necked Ibis sightings, Litchfield National Park ranks 2nd at about 30%. The best odds are in Kakadu National Park (Australia, about 50%).
GBIF citizen-science records
It is estimated from how often the Straw-necked Ibis is recorded against all the birds logged in Litchfield National Park (124 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
