Can someone tell me if there is an easy way to treat the entire flock for worms ?
it would appear, per popular opinion, that Albendazole and Fenbendazole is the best choice.
I don't want to have to chase down 35 birds and try to orally force feed them medicine.
I was thinking there may be a way to worm them via their water. 
 
I had a hen go lethargic a week ago. I found her just sitting and not moving around much.
I fed her yogurt and scrambled eggs with some freeze dried meal worms mixed in 2 to 3 times a day for 4 days.
Each day she seemed to get a little stronger and her appetite picked up each day. I still have no idea what was wrong with her.
She is fine now and acting normal. She is a production red thats 1.5 years old.
 
Yesterday i found another production red hen acting the exact same way.
I immediately picked her up and started feeding her yogurt and meal worms.
Last night i went into the house and found her in a , low to the floor, nest box.
I made her a scrambled egg and mixed it with 2 tsp of plain yogurt and about 50 meal worms.
She ate it like it was her last meal. Very aggressive appetite . When i took her back to the house and sat her on the floor,
she seemed not to want to stand up, like her legs were weak. I read in this thread somewhere that weak legs may be a symptom
of worm infestation.
 
I found her this morning sitting on the edge of that same nest box.
It would appear that ambulating is difficult for her.
 
I have also noticed very large areas in the PDZ under their roost board that are like someone poured water on the PDZ.
Areas that are about a 4" circle. Is this another indicator that someone has worms ? I have never seen those types of areas
in their PDZ before and its more than one area, more like 6 to 8 areas like that. I assume its more than 1 bird doing it. These areas
are by no means, normal droppings that i have ever seen.
 
My egg production is WAY down. Yesterday i got 11 eggs from 30 birds but they are mounting.
 
So to summarize, do you think these symptoms are in line with a worm infestation and is there a way to treat them all at once in their water ?
Any help is appreciated and thanks in advance.