Discover Australia’s Smallest Bird – A tiny feathered wonder

Most people would be aware of Australia’s largest bird, the Emu, an awkward-looking, flightless creature that has become an icon of our beautiful country. What about the smallest bird in Australia though? It doesn’t garner any attention, so in this article, I will make it the star.

Australia’s smallest bird is the Weebill, a passerine (perching bird or songbird) that is around 8 to 9 cm (3.1 to 3.5 in) long. An adult Weebill weighs just 6 g (0.21 oz) and has a wingspan of about 15 cm (5.9 in). They are olive-gray and yellowish birds with short, stubby beaks.

There is so much to learn about the Weebill. Read on to find out where they live, what they eat, how they sound, and more about this fascinating little bird.

How To Identify The Smallest Bird In Australia By Sight

Australia's smallest bird, the Weebill perched in a gum tree
Weebill – image by Andrew Haysom from Getty Images.

The Weebill’s plumage ranges from olive-grey on its upper parts to more yellowish on its belly and under the rump. In the southern parts of Australia, they are browner and Weebills in the tropical areas are more yellow.

Their defining characteristic is their short stubby bill or beak. The Latin name for the Weebill is Psilopus brevirostris. Brevirostris is derived from the Latin words brevis, meaning ‘short’, and rostrum meaning ‘beak.’

Adult Weebills have pale yellow eyes and a cream-coloured supercilium (the strip above the eye). The feathers on the throat are grey and often have striation (alternating light and dark bands).

The beak of a Weebill is pale grey in adult birds and yellow in young ones. The juveniles also have greener eyes than adult birds.

Weebills are often confused for Thornbills which are also small, mostly brownish-coloured birds. What makes them different is their short beak.

a Brown Thornbill in a tree
Brown Thornbill – image by Barry Callister Photography.

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How To Identify A Weebill By Sound

For such a small bird, the Weebill has quite a loud call which can be heard in the Australian bush from quite a distance away.

Listen to the recordings below from the Cornell Lab Of Ornithology to hear the various calls of this amazing little bird. Each recording was made in a different state in Australia. Listen to each one to hear the subtle differences in their calls:

Where To Find Them

Weebills can be found all across mainland Australia.

a map of Australia with most of it shaded red showing the distribution of the Weebill
StephanieMartin272, CC BY-SA 4.0, via Wikimedia Commons

They prefer open eucalyptus forests but can be found in almost any wooded area. They spend most of their time high in the canopy flitting about catching insects from the leaves at the outer edges of trees.

Weebills often flock with other birds such as Thornbills, Silvereyes, and others when feeding. This is probably why they are often confused with thornbills.

a Brown Thornbill on the left and a Silvereye on the right
Brown Thornbill and Silvereye – images by Andrew Haysom and Stanley Sutton from Getty Images.

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All About Weebil Nests

The tree canopy is where they will build their nests also. A Weebill nest is made from grasses and plant fibres suspended from a branch and hidden in the canopy. There is a narrow spout-like entrance at the top of the nest.

a Weebill, the smallest bird in Australia, perched in its nest in a gum tree
A Weebill with its nest in a eucalyptus tree – image by Neville Bartlett from Friends Of Chiltern Mt Pilot NP on Flikr (CC BY-NC-SA 2.0)

These dome-shaped nests often contain cobwebs, insect cocoons, and animal hair which all help to bind together and strengthen the nest.

Weebills have been known to nest right next to the nests of the communal spider Badumna Candida. This is quite strange as Weebills eat spiders?! Their reasons for doing this are not known, it may be that they gain protection from predation by birds, mammals, reptiles, and also parasitical insects. It may simply be a matter of concealing the nest by situating it right up against the spider’s nest.

If you want to explore more information about Weebills nesting next to spiders, read this article by J. N. Hobbs in The Australian Bird Watcher.

The female Weebill normally lays two to four brown-speckled, cream-coloured eggs which she alone will incubate. The young hatch after around 10-12 days and both parents care for them.

4 Weebill eggs in a box filled with cotton wool
Weebill eggs – image courtesy of Museums Victoria (CC by 4.0)

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What Do Weebills Eat?

Australia’s smallest bird is insectivorous which means they eat insects and the larvae of insects. Occasionally they will also eat seeds.

a Weebill bird with an insect in its beak
Weebill with an insect – image by David Cook from Flikr (CC BY-NC 2.0)

They will eat arthropod prey such as spiders, beetles, and flies. Weebills help with plant health as they eat a lot of pests that would damage the trees such as psyllid.

Their short beaks are perfectly designed for gleaning; a method of catching food by plucking it from the foliage of trees, or the ground. They will also hover while picking food from the leaves of trees high in the canopy.

Is The Weebill Really Australia’s Smallest Bird?

If you have read this far into the article, you are probably saying “What?! You made me read this far just to tell me that the Weebill is not Australia’s smallest bird?!” Relax, I am about to explain…

a Mallee Emu Wren perched on a stick
Mallee Emu Wren – image by Ron Knight from Flikr (CC by 2.0)

The image above is a Mallee Emu Wren, often considered to be the smallest bird in Australia. The problem, however, is that to call it the smallest, we have to discount its tail in the measurement.

The Mallee Emu Wren does have a smaller body than the Weebill but that lovely long tail robs it of the title of the smallest bird in Australia. From the tip of its head to the tip of its tail, a Mallee Emu Wren is 16.5 cm (6.5 in) – double the length of the Weebill.

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Comparing The Smallest Bird To The Largest

Early in this post, I mentioned the Emu, Australia’s largest bird. But just how much smaller is the Weebill? Let’s do a comparison…

a graphic showing the size difference between a Weebill and an Emu
Emu and Weebill height comparison

That tiny little dot on the left of the picture above is a Weebill! They are just a little longer than an Emu’s beak (the proportions of this Emu graphic are not quite right). Luckily for the Weebill, Emus are herbivores!


Barry Callister

Barry is a bird photographer and bird watcher with over 7 years of experience. He runs his own YouTube channel about photography and promotes his nature photography on his personal website

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