Jim Harbaugh likes development of 49ers receivers

The San Francisco 49ers are working to be more explosive in the passing game this season and a big part of that equation starts with the wide receivers.

Coach Jim Harbaugh raved about the performance of Randy Moss and Michael Crabtree on Thursday as the club closed down its minicamp. The team also added Mario Manningham via free agency and A.J. Jenkins as a first-round draft pick, adding to a mix that was led by Michael Crabtree.

“Well, they did really well, great offseason. Both those guys (Moss and Crabtree) worked extremely hard and they were outstanding teammates,” Harbaugh said. “Everybody loves being around them. I think if you asked anybody about Randy and Michael, A++ in the way they’ve worked this offseason. But Mario Manningham really surged on in this camp as he’s gotten to know this system. Kyle Williams continues to elevate his play, very steady and then a pretty big inflection point I would say in this minicamp in particular. Thought he was outstanding.

“Brett Swain had an outstanding camp. Joe Hastings continues to improve. And then the young guys have all shown really, really good flashes. And feel like still even more sure now than we were when we had the first rookie minicamp if you recall, we said these guys were the best group of young receivers, rookie receivers, that we’ve ever been around. And now we’re sure of that the way they’ve played. Now they’re learning the terminology, is the biggest thing for those young guys, and they’re way ahead of the curve. But the better they learn it the more they hear it. And it’s just a matter of hearing it and doing it.”

Harbaugh is going to get away now for a week. He said he’s not taking a vacation, but he is embarking on a seven-day trip to Piura, Peru, to help build houses. It’s set up through a Catholic church. The city of nearly 400,000 people is in the northwestern region of the country.

“Looking forward to it,” Harbaugh said.

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Brad Biggs covers the Bears for the Chicago Tribune

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