Bermuda grass question....

[Washtub]

Can anybody tell me what is making these mud clumps in my Bermuda grass? Worms, grubs, birds??? They are all over the yard.

 

[Milkman]

Probably just worms working

 

[Washtub]

Looks like I may have found my answer....earthworms, and the mud balls are the “castings” left behind.

https://www.gtlawnservice.com/2010/07/what-are-all-those-bumps-on-my-lawn/

 

[NCHillbilly]

Looks like either worms or mole crickets.

 

[Bibb]

sod web worms

 

[futbolwest]

Dig down to 8 - 10 inches in several spots and look for grubs, probably sugarcane beetle grubs.