The Seagulls moving to Macon, Georgia in 1889 is a historical event that does not appear to be well-documented in readily available resources. It's possible that this is a reference to a particular historical story or event that is not widely recognized or documented.

In historical context, large movements of birds such as seagulls typically occur due to factors like changes in food supply, habitat alterations, or environmental changes. Around the end of the 19th century, various regions in the United States were experiencing significant agricultural and urban developments, which could lead to such phenomena.

If this involves a local story or specific event in Macon, Georgia's history, primary sources like local historical societies, libraries, or newspapers from that time might hold clues. Additionally, contacting a local historical society, such as the Historic Macon Foundation, could potentially provide more detailed information or clarification.