Bird Survival is more important than the "Perfect Lawn"

2,4-d is the herbicide TruGreen and many other companies spray all over lawns across the U.S. It's the active ingredient in most 'Weed n' Feed' products. 2,4-d was used to defoliate areas of Vietnam during the war. 2,4-d is 50% of the active ingredients in Agent Orange.

Five reasons NOT to use "Weed and Feed"

https://www.beyondpesticides.org/assets/media/documents/pesticidefreelawns/resources/weed%20and%20feed%20factsheet.pdf?fbclid=IwAR1y2Wnn8nZ0R1y5tBfzIWwJto_iDiQCu4HbpokFvLaXVkCLZMKecZUht5M