Variable Antshrike
Thamnophilus caerulescens

The variable antshrike is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Argentina, Bolivia, Brazil, Paraguay, Peru, and Uruguay. Source
Where is the Variable Antshrike now?
In the last 8 weeks it was recorded 1,251 times across 7 areas (each area is a 5 degree square).
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How the Variable Antshrike moves through the year
Over the weeks it was present in the past year, its centre in South America ranged from 27°S in September to 11°S in June, about 1,800 km apart.
When does the Variable Antshrike arrive?
The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.
| Region | First arrival | Last arrival | Typical peak | Areas |
|---|---|---|---|---|
| South America | 10 August 2026 | 10 August 2026 | 5 October 2026 | 1 |
Download every area as CSV · Review these arrival dates (researchers, ORCID sign-in)
Arriving at the same time in South America
- Rufous-bellied Thrush Turdus rufiventris
- Common Pauraque Nyctidromus albicollis
- Creamy-bellied Thrush Turdus amaurochalinus
- Rufous-Collared Sparrow Zonotrichia capensis
- Social Flycatcher Myiozetetes similis
- Little Nightjar Setopagis parvula
- Rufous Nightjar Antrostomus rufus
- Sick's Swift Chaetura meridionalis
Every arrival in South America, month by month
Related species
- Black-crowned Antshrike Thamnophilus atrinucha
- Barred Antshrike Thamnophilus doliatus
- Black-hooded Antshrike Thamnophilus bridgesi
- Uniform Antshrike Thamnophilus unicolor
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured · How it compares with human observers