Wind and precipitation play a crucial role in advancing or delaying the breeding cycles of North American tree swallows, according to the results of a new study. Wind and precipitation play a crucial ...

Wind and precipitation play a crucial role in advancing or delaying the breeding cycles of North American tree swallows, according to the results of a new CU Boulder-led study. The research, which ...

Mating by birds — the passage of sperm from the male to fertilize eggs produced by the female — is quite unlike that of mammals. It begins with the male Tree Swallow, in this case, finding an ...

SAUKVILLE – Prairies are rich wildlife habitats. They are so bountiful, in fact, sometimes they even host species that evolved to breed elsewhere. For proof we need only look at two restored ...

The researchers, who examined decades of data on weather, food availability and breeding in Tree Swallows, say that the timing of when to breed and when food is available is becoming decoupled for ...

A pair of tree swallows that survived the record-breaking mid-March blizzard south of us last spring got directly to work when they finally arrived. They chose one of the nest boxes I maintain at a ...

What turns on a tree swallow may someday help people fight off diseases. The better looking a male tree swallow is, the more effective his immune genes are, and the more likely his offspring will be ...

Surviving on a warming planet can be a matter of timing -- but simply shifting lifecycle stages to match the tempo of climate change has hidden dangers for some animals, according to new research. The ...