Testing Tree Swallow Nestlings’ Parasite Susceptibility
In many bird species, the eggs in a clutch don’t necessarily hatch at the same time, creating a hierarchy of size within broods.
Are Aggregate Pits a “Trap” for Nesting Bank Swallows?
Sand and gravel pits may seem like an unlikely place to nest, but they greatly resemble Bank Swallows’ natural habitat along rivers and lakeshores.
Winter Experiences Carry Over into Swallows’ Breeding Success
There’s no shortage of studies demonstrating that conditions during one part of birds’ annual of breeding and migration cycle can affect individuals in subsequent stages — a phenomenon known as carry-over effects.