It's just another day in the park for comedy co-stars Amy Poehler and Aubrey Plaza as they shoot a surprisingly serious scene

Work really is just a walk in in the park for Amy Poehler and Aubrey Plaza.
The 41-year-old actress and her co-star, 29, got some fresh air while filming Parks and Recreation in Los Angeles on Thursday, but the normally jovial pair were in super serious mode.
With a mustard yellow hoodie pulled over her head, Aubrey, who plays cynical intern April Ludgate-Dwyer, looked like she was going undercover on a secret mission.

Park life: Amy Poehler and Aubrey Plaza put on their serious faces when they shot a scene for Parks And Recreation in Los Angeles on Thursday

Lead star of the NBC hit, Amy, was her usual casual self in a floral blouse, jeans and a mumsy red cardigan. 
Her character, Leslie Knope's natural optimism seemed to be somewhat soured by whatever they were filming, however, as the actress kept a focused expression on her face.
In one scene the pair are hunched over an iPhone and appear to be plotting something or deciphering a secret text message.

Phone hackers: Amy and Aubrey were captivated by whatever message was on the iPhone

Plotting: Amy and Aubrey's characters looked like they were up to mischief as they filmed in the quiet Los Angeles neighborhood

While former Saturday Night Live star Amy later broke out into a big smile and was spotted laughing on the busy set, Aubrey maintained her signature ironically blank expression.
Plaza joined the series when the role of April was specifically written for her by creator Michael Shur, after being told by the casting director. Allison Jones: 'I just met the weirdest girl I've ever met in my life. You have to meet her and put her on your show.'
The resulting quirky character has since become renown for her dead pan personality and her enduring affection for on-screen boyfriend, Andy Dwyer, played by Chris Pratt.

Action: Amy looked mature and conservative in a knitted cardigan and jeans

Secret spies: The NBC comedy characters were clearly transfixed by something in the scripted scene

Younger actress Aubrey recently revealed that she has a girl crush on her Parks And Recreation mentor, Poehler.
'She’s already kind of my girlfriend, and I’m not saying that in a jokey way,' Plaza revealed to Rolling Stone magazine.
'We had a moment last year, late at night, when we decided we were gonna end up together. For now, we have to let boys come and go, but we’re kind of in love.'

Time for a break: Amy cracked a smile as she chatted with a NBC staffer when the cameras stopped rolling

Girl talk: Recently-divorced Poehler is her happy self again since she began dating boyfriend Nick Kroll in May

This may be news to Poehler's real life boyfriend, Nick Kroll, who is six years her junior.
The couple first went public with their relationship earlier this summer at the AFI Lifetime Achievement Award in May, and the 35-year-old comedian is her first partner since she split from husband, Will Arnett, in September 2012.
'Things are going well,' a friend recently told Us Weekly. 'They have a lot of fun together obviously and are both real big fans of each other.'