Bill Streicher-USA TODAY Sports

The Philadelphia Eagles are making changes under their revamped coaching staff. 

For the first time in two years under head coach Nick Sirianni, they will hold a mandatory minicamp this offseason. 

Here's a look at the Eagles' key offseason dates: 

First day: April 15

OTAs: May 20, May 22-23, May 28, May 30-31

Mandatory minicamp: June 4-6

That's a big difference from Sirianni's first two seasons where they ran a much lighter offseason program that consisted of only six total voluntary OTAs and no mandatory minicamp. 

However, these workload changes are necessary after the Eagles completely dropped last season and cleaned up their coaching staff. 

It's an exciting time for the Birds since it will be a first glimpse into Kellen Moore and Vic Fangio's offensive and defensive schemes. 

Moore replaced Brian Johnson while Fangio was hired to replace Sean Desai. 

Additionally, there's a chance some questions will be answered regarding who will fill  Jason Kelce's big shoes as the team's new starting center and whether or not Haason Reddick is here to stay. 

Once the team wraps up minicamp on June 6, the Eagles will get a much-needed break until training camp begins at the end of July. 

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