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Habitat selection has profound consequences for individual fitness, but how do animals decide where to
settle? The natal habitat preference induction (NHPI) hypothesis proposes that individuals choose
habitats that exhibit similar environmental cues to those experienced in early life. In this study, we first
examined juvenile movements and dispersal and then tested the NHPI hypothesis in the monk parakeet,
Myiopsitta monachus, an invasive species that nests primarily in pine or palm trees in our study site.
Juveniles were observed ranging extensively, but we found no relationship between ranging distances
prior to dispersal and subsequent natal dispersal behaviour. As predicted by NHPI, we found that
dispersed individuals displayed a significant preference for nesting in their natal tree type in their first
year, irrespective of tree availability. The probability of changing tree type was not influenced by individual
dispersal distance, the proportion of the natal tree type available or natal tree type.We found that
adult birds undertaking breeding dispersal also showed a preference for the same tree type they
dispersed from when making nest site selections, demonstrating that preferences can be maintained by
adults during breeding dispersal movements. Finally, conspecific breeding success did not differ between
palm and pine tree nests, and so did not provide a useful source of public information regarding the
suitability of the two nesting substrates. These results contribute to our understanding of the drivers of
habitat selection in both adults and juveniles and have implications for our understanding of dispersal
patterns and range expansion in this worldwide invasive species.
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© 2023 The Authors. Published by Elsevier Ltd on behalf of The Association for the Study of Animal Behaviour.