Biological invaders can reconfigure species interactions
to disrupt, replace or facilitate native plant–animal
mutualisms (Traveset & Richardson 2006; Foster &
Robinson 2007). Ants are increasingly moved by
humans across biogeographic barriers (Suarez et al.
2005) and some have established around the globe,
producing major ecological consequences for recipient
communities (Lach & Hooper-Bui 2009). Most attention
has focused on impacts of invasive ants on native
ants, but adverse effects extend to many organisms,
including birds (Lach & Hooper-Bui 2009).