I've been holding off giving an answer to this one. I kept hoping some un-mentioned tips for summer calling would come to mind. Never happened. What those guys said about covers it. It is usually a more difficult time to call because you are primarily going to be dealing with mature call-resistant dogs by this time of year. Common distress sounds that worked last fall will largely go ignored in my area, this time of year. As was mentioned, howling and pup distress seems to work better than anything. I do notice the distress sounds still work at night this time of year though. This is a great time to call at night. June and July are my least favorite months for calling during the day. To be honest I don't call much this time of year anymore unless someone needs a favor. As Jerry said, for comforts sake, a guy needs to get out early. The sun comes up real early now so need to be in the field by 4:30- 5:00am. I usually resume calling around Sept 1 or even the end of Aug if it starts to cool off. The harvested fields have better visibility. Pups are getting to be more of a challenge to feed then. Mom & Dad are taking bigger risks hunting in the daylight, knocking off lambs. The sheep ranchers start calling about then. Pups start to respond to calling too. I like to give my favorite spots a rest this time of year. Otherwise a fella is just going to get them call shy for when fall and winter arrive. Anyway, I don't put much effort into calling right now unless someone needs a hand.
Later, Curt