Firebirds: Ornithogenic Fire

09/02/2018

Lawson Brandis – Environmental Specialist
 
During a bushfire it’s common to see birds circling the fire front, waiting to capitalise on prey animals seeking to escape the fire. There is also evidence that certain bird species deliberately spread fire as a hunting strategy. This phenomenon is referred to as Ornithogenic Fire.
 
Robert QuoteIndigenous Knowledge
Despite a long-held belief that humans have the monopoly on the use of fire (Goudsblom, 1986), the indigenous people of Northern Australia have known about “firehawks” for thousands of years, with some traditional ceremonies depicting the behaviour. The Lorrkon and Yabuduru ceremonies from the Arnhem Land region incorporate re-enactments of birds spreading fire.
 
Due to a lack of photographic or video evidence, there has been a great deal of scepticism when it comes to ornithogenic fire. However, a recent article published in the Journal of Ethnobiology collects eye-witness accounts from Australia’s Top End of three different species of raptor using smouldering timber to spread fire (Bonta, et al., 2017).
 
FirehawkFirehawks
Black kites (Milvus migrans), whistling kites (Haliastur sphenurus) and brown falcons (Falco berigora) are commonly found around fire front, preying upon the small animals escaping the fire. These birds have also been observed picking up and carrying smouldering sticks, using either talons or beak, to unburnt areas, dropping them and starting new fires. Not all attempts are successful, but many are, with both solo and cooperative attempts reported by witnesses. While most reports of this phenomenon are focused in the savanna woodlands of the Northern Territory, there are also reports from Queensland and Western Australia.
 
CaracaraFuture Research
As well as Australia, there is evidence of similar ornithogenic fires in Africa and the USA, with other potential arsonist bird species being the grasshopper buzzard (Butastur rufipennis) and the crested caracara (Caracara cheriway). 
 
The next goal is to capture these birds spreading fire on film. To accomplish this, researchers are planning to engage the help of Aboriginal land managers in the Northern Territory to set controlled fires and attempt to document the phenomenon.
 
Ornithogenic fire is a relatively new inclusion in the scientific lexicon. Much more research is required to understand the possible implications to the evolution of tropical savannas, human fire usage, and fire ecology. 
 
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References
Bonta, M., Gosford, R., Eussen, D., Ferguson, N., Loveless, E., & Witwer, M. (2017). Intentional Fire-Spreading by “Firehawk” Raptors in Northern Australia. Journal of Ethnobiology, 37(4), 700-718. Retrieved from http://www.bioone.org/doi/abs/10.2993/0278-0771-37.4.700
 
Goudsblom, J. (1986). The human monopoly on the use of fire: Its origins and conditions. Human Evolution, 1(6), 517-523. Retrieved from https://doi.org/10.1007/BF02437468
 
Roberts, W. P. (1962). In D. Lockwood, I, The Aboriginal. London: Readers Book Club.

 

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