Migration Distance Doesn’t Dictate Arrival Timing in Barn Swallows
A male Barn Swallow at its nesting grounds—arrival timing varies widely, but not always in proportion to migration distance. © Attila Szilágyi

Migration Distance Doesn’t Dictate Arrival Timing in Barn Swallows

Barn Swallows winter as far apart as Ghana and South Africa – yet return to the Netherlands at the same time. Here’s how they stay precisely on schedule.


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The Sanctuary in the Sidewalk: Trees Rescue Birds in Mexico’s Cities
City trees offer shelter and song: House Finches are among the adaptable species thriving in Mexico’s urban nature pockets. © Braxton Landsman

The Sanctuary in the Sidewalk: Trees Rescue Birds in Mexico’s Cities

Even in the heart of a city, a tree can be a sanctuary for birds. A new study from Mexico reveals that urban trees do far more than provide shade – they offer critical nesting and foraging habitats for native species under pressure from habitat loss elsewhere.


The Ornithologist

The Ornithologist