By Patmcburt
Stirlingshire,
United Kingdom 
Magpies are pulling small tufts from my lawn not for nest building
pulling them and leaving them on grass
25 Apr, 2016
Answers
Yep, probably leatherjackets, the larval stage of the crane fly, birds pecking the turf is a good indicator of this problem. More info in the link below, but for specific information on supply and use of nematodes, google Nemesys and select the one for leatherjackets
https://www.rhs.org.uk/advice/profile?PID=651
25 Apr, 2016
They're probably feeding on leather jackets just under the surface.
25 Apr, 2016