Here is a concise summary of the text:
**Title:** The Mysterious Spread of a New Song Among White-Throated Sparrows
**Key Points:**
1. **Discovery**: In the late 1990s, Dr. Ken Otter observed White-Throated Sparrows singing a unusual, "remixed" version of their typical song in Western Canada.
2. **Spread**: Over 20 years, the new song spread rapidly, replacing the original in many areas, reaching from Alberta to Quebec, and as far south as Texas and Arkansas.
3. **Research**: Dr. Otter's study, aided by crowdsourced bird song recordings, found no practical advantage (e.g., predator deterrence, mate attraction) to the new song.
4. **Theories**: One possible explanation is that the new song is easier for younger sparrows to sing, making it more popular among younger generations.
5. **Implications**: This phenomenon opens up new areas of study in animal artistry, creativity, and collaboration, highlighting the need for continued documentation of bird songs.
**Sponsorship Note**: The video is sponsored by Squarespace, with a promotional segment encouraging viewers (humorously, including birds) to create websites using their platform.
Here are the key facts extracted from the text, numbered and in short sentences:
1. **Researcher**: Dr. Ken Otter, a professor at the University of Northern British Columbia, studies bird behavior and communication.
2. **Location of Initial Observation**: West of the Rocky Mountains.
3. **Subject Species**: White-throated sparrows.
4. **Initial Discovery Year**: Late 1990s (exact year not specified in the provided text, but mentioned as "2000" in the context of the study period).
5. **Phenomenon Observed**: A new, "weird" song sung by white-throated sparrows, different from their typical tune.
6. **Spread of the New Song by 2004**: Half of the sparrows in Alberta had adopted the new song.
7. **Spread of the New Song by 2014 (10 years later)**: The new song had completely replaced the old one.
8. **Research Method**: Geo-locators were strapped on approximately 50 male sparrows in Prince George to track their migration patterns.
9. **Migration Patterns**: Sparrows branched out, crossing paths with birds in Kansas, Oklahoma, Texas, and as far east as Arkansas.
10. **Song Adoption by 2016**: The new song was sung by birds as far east as Quebec.
11. **Study Publication**: Dr. Otter and his team published their full study in the year the video was made (exact year not specified).
12. **Study Period**: The study mapped the song's spread from 2000 to 2019.
13. **Outcome**: The new song practically replaced the original tune across the observed area.
14. **Theory on Song Adoption**: Proposed by Emily Hudson, a biologist at Vanderbilt University, suggesting the new tune might be easier for younger sparrows to sing.
15. **Data Collection for Research**: Approximately 1,800 bird song recordings were crowdsourced for the study.
16. **Impact of Internet on Bird Song Documentation**: The internet has enabled extensive documentation and examination of bird songs, which was previously nearly impossible.
17. **Call to Action**: Viewers are invited to contribute to bird song documentation through linked websites, assisting research scientists.