Is the Darién Region of Colombia a Migratory Bottleneck for Neotropical Migrants?
Our passion for migratory birds and curiosity to reveal the mysteries of migration took us to one of the most spectacular regions of Colombia: the Darién.
Tag: migration
Fifty Years of Data Show New Changes in Bird Migration
New research shows that fall migration patterns have been shifting over time.
Rare Itinerant Breeding Behavior Revealed in California Bird
Reproduction and migration are the two most demanding tasks in a bird’s life, and the vast majority of species separate them into different times of the year.
Snow in the Mountains
I had no sooner posted last week’s piece about David and Elizabeth Lack in the Pyrenees when there were barn swallows everywhere in the Biros Valley. Until then I had seen no sign of the sort of visible migrations described by the Lacks, possibly because mid-September is a bit too early for that. For the …
Grandeur and Novelty
How do small land birds migrate past high mountain ranges? This is not a question that has often been asked in the Americas because most of the big mountain ranges run north-south. But in Europe, where the Alps and the Pyrenees would seem to be a formidable barrier to migration (see map below), this issue …