When Jay Falk and Scott Taylor first saw the white-necked Jacobin hummingbird chick in Panama’s dense rainforest, the bird biologists didn’t know what they were looking at. The day-old bird, smaller ...

For the first time, scientists described a hummingbird chick potentially mimicking a poisonous caterpillar to avoid getting eaten. When Jay Falk and Scott Taylor first saw the white-necked Jacobin ...