Swizz researchers outfitted 77 bee-eaters in 2015, and 92 more in 2016 with loggers, and here’s what they found out:
-Multisensor loggers reveal the spatiotemporal group dynamics of migrating birds.
-European bee-eaters ( Merops apiaster) can migrate ∼14,000 km in the same group.
-Groups that separate during migration can reform after ∼5,000 km apart.
These bee-eaters were going from Germany to Angola in winter. With a weight of 5 cm (2 inches), they did this without the help of smartphones and electronic devices, this could never come around by Darwinian devices (i,e., random mutations and natural selection).
Dhanjal-Adams, Kiran L et al. 2018 Spatiotemporal Group Dynamics in a Long-Distance Migratory Bird. Current Biology 28, 17.