Duck Dynasty

Winged animals don't stand a chance ... because the boys from "Duck Dynasty" have the Lord on their side ... they're not afraid to yell it from the pulpit.

And the church said ... QUACK, QUACK!!

Here's something you probably didn't know: the stars of "Duck Dynasty" are hardcore Christian evangelists who frequently preach at their local church ... and TMZ has video of some of last weekend's sermons.

A ministry assistant at White's Ferry Road Church of Christ in West Monroe, LA tells TMZ, Phil Robertson and his family have been active at the church for more than 30 years.

We're told Phil regularly gives fiery sermons -- but last weekend, the entire family joined in, when the church celebrated Duck Commander Sunday ... a yearly tradition where the entire Robertson family preaches to the congregation in full camo (not kidding).

Funny... we're told the Duck Commander Sunday tradition existed long before the A&E reality show.

"Duck Dynasty" stars Korie Robertson and Willie Robertson just alighted on the swamps of Washington, D.C. ... for an appearance at the White House Corresopndents' Dinner!

Just don't tell Tom Brokaw -- as we previously reported, the legendary newsman is boycotting the event after Lindsay Lohan made an appearance last year ... and that was the LAST STRAW.

But that doesn't faze the Robertsons ... they say they're going to raise the bar ... and they've got something LiLo doesn't ...