Hosts and their symbionts are involved in intimate physiological and ecological interactions.
The impact of these interactions on the evolution of each partner depends on the time‐scale …

Natural populations often experience the weakening or removal of a source of selection that
had been important in the maintenance of one or more traits. Here we refer to these …

In recent years, scientists have realized that evolution can occur on timescales much shorter
than the" long lapse of ages" emphasized by Darwin—in fact, evolutionary change is …

Somewhere in Africa, more than a million years ago, a line of apes began to rear their young
differently than their Great Ape ancestors. From this new form of care came new ways of …

Avian eggs differ so much in their colour and patterning from species to species that any
attempt to account for this diversity might initially seem doomed to failure. Here I present a …

Coevolutionary theory predicts that the most common long‐term outcome of the
relationships between brood parasites and their hosts should be coevolutionary cycles …

Biological invaders represent one of the primary threats to the maintenance of global
biodiversity, human health, and the success of human economic enterprises. The continuing …

I suggest that the cuckoo's parasitic adaptations are of two kinds:'trickery', which is how adult
cuckoos and cuckoo eggs and chicks evade host defences, and involves adaptations that …

Avian parents and social insect colonies are victimized by interspecific brood parasites—
cheats that procure costly care for their dependent offspring by leaving them in another …

The interactions between avian obligate interspecific brood parasites and their hosts provide
tractable systems for studying coevolutionary processes in nature. This review highlights …