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Pioneers in Science: Rowan and the Junco

4 minutes 54 seconds

Now Playing As: Captioned (English) (change)

Scientist William Rowan is renowned for his research on the dark-eyed junco. Before Rowan, it was unknown what environmental cues animals used to time the seasonal changes in their biology. Through a groundbreaking experiment with the junco, Rowan discovered the physiological reaction of organisms to the length of day or night. Shot as an historical re-enactment, this segment provides a glimpse into the history and human dimensions of scientific research and reveals one of the first studies that made juncos well-known to biologists. Part of Ordinary Extraordinary Junco (Chapter 1).

Media Details

Runtime: 4 minutes 54 seconds

Topic: Science
Subtopic: Animal Behavior, Birds, Science Experiments, Science Methods
Grade/Interest Level: 9 - 12
Standards:

Release Year: 2012
Producer/Distributor: Department Of Biology, Indiana University
Series: Ordinary Extraordinary Junco
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Man in suit and bowtie with a blackboard behind him. Blackboard shows two sets of birds in cages, one with lights, one without. Caption: This pioneering experiment would make Rowan famous.

Map of North and Central America. Different areas of the map are highlighted to indicate the habitat areas and 5 birds are superimposed on the map. The highlighted areas are concentrated in central Mexico, the west coast of the United states, and much of Canada and Alaska. Caption: they changed eye color from yellow to dark.

Bird with white belly, dark back and wings perched on a branch in a thicket. Caption: People are more like birds than we thought.

A small bird perched on a plank. Caption: Somehow, there was a critical mass action that took off.

Bird perched in a tree. Caption: That would be evidence of habitat adaptation.

Closeup of a bird on a branch. The bird has a light-colored body and a dark head. Caption: where they're evolving right before our eyes,

A bird's nest in the ground with a baby bird, beak open. Caption: There will be winners and losers each year.

A small bird perched on a person's hand. It is gay with some brown on the wings. Caption: It's much more olive-gray, duskier gray on the head.

3 people with hats, backpacks, and cameras and several horses, some with riders, hike up a dirt trail on a mountain amongst various flora in the fall. Caption. The mountains of Baja.