Aggressive interference can be an important expression of competitive interactions within and among species. We studied potential interference between two similar-sized, sympatric species of woodland ...

We analyzed data from two independent studies of foraging Black-legged Kittiwakes (Rissa tridactyla) in Prince William Sound, Alaska. Our purpose was to determine if Glaucous-winged Gulls (Larus ...

Reproductive interactions between incipient species are likely to play an important role in shaping their evolutionary trajectories. An important step in the speciation process is the formation of ...