Hey, Sis in C!!!!
Where you been, girl! With the new chicks they pecked at the red plastic on the nipples and would accidentally hit the nipple bar, getting water...they learned it so fast and all I had to do was peck at the nipples first myself. They are naturally curious and will do a monkey see, monkey do training on the rest of the chicks.
Now, my older birds? Never had any luck training my older flock to the straight nipples and never tried them on the nipple cup waterer more than a little while...they didn't seem to get it even when I baited the cup with BOSS several times. BUT...the pen of cheap meats learned it right away, led by BUD, and used it wonderfully. It was simply wonderful to have them use the nipple bucket verses a water pan.
If I wanted to get serious about the older birds on it, I could lock them down for a couple of weeks and see if they finally learned it but with them getting a lot of moisture from the FF they never seem thirsty enough to access it.
Folks do both...it doesn't really matter.
Ditto on the ladybugs...they have made their annual appearance here also.