flava under a stone beneath a nest of the slave-making F.
sanguinea emerge, carrying a pupa; but I was not able to find the desolated nest in the thick heath.
The masters determine when and where a new nest shall be formed, and when they migrate, the masters carry the slaves.
It would be easy to show that several distinct mental actions are commonly embraced by this term; but every one understands what is meant, when it is said that instinct impels the cuckoo to migrate and to lay her eggs in other birds' nests.
So it is with the nests of birds, which vary partly in dependence on the situations chosen, and on the nature and temperature of the country inhabited, but often from causes wholly unknown to us: Audubon has given several remarkable cases of differences in nests of the same species in the northern and southern United States.
But as ants, which are not slave-makers, will, as I have seen, carry off pupae of other species, if scattered near their nests, it is possible that pupae originally stored as food might become developed; and the ants thus unintentionally reared would then follow their proper instincts, and do what work they could.
This information is crucial for understanding the mechanisms that may drive the high diversity of nest
forms and locations, the causes of high predation rates among Neotropical bird species, and the factors that influence nest
attendance behavior (Londono 2005).