Humpback whales (Megaptera novaeangliae) are capital breeders, migrating from high latitude feeding grounds to low latitude breeding areas. Their life history, as they face varying environmental conditions throughout migration, leaves them vulnerable to global change. Deviations from their traditional migration seasonality and feeding behaviour has been documented for a number of populations worldwide, suggesting an intrinsic ability to adapt to variability in prey abundance and type; from extending time in breeding areas and shifting of feeding grounds, to occurrences of large feeding aggregations on multiple migratory routes. Occurrences of feeding outside recognised feeding grounds have been recorded off the south-east coast of Australia, the Great Australian Bight and off St Helena Bay and Saldanha in South Africa. Such feeding events may indicate behavioural shifts of humpback whale migration and feeding, with some individuals switching the timing of their feeding behaviour away from their traditional feeding grounds. Our study aims to understand the role of supplementary feeding in the E1 population of humpback whales. We will present results from a literature review on supplementary feeding, from published, grey, and anecdotal sources, and discuss how these observations relate to anecdotal reports in Australia and worldwide.