Buff Cochin with possible respiratory issues?

Tonight I went to check on my girls, one of my girls a younger 6-8 month old buff cochin was sneezing/coughing when I went in, they got let out yesterday evening and were totally fine it seems as though this has started randomly.

She is bright eye'd, I saw her running around this afternoon, no snot from her nose, no bubbles in her eyes, but she is making a gurgling noise and is sneezing here and there. I brought her inside from the night to seperate her from the flock but am not sure where to take it from here.

Our weather has been normal, I say a low of 55-60 degrees at night and high 70's during the day, she has been eating and drinking fine and when I brought her tonight her crop is full

She is one of my biggest most healthy girls so I am concerned at how she caught some sort of cold in such a short amount of time. Should I check her for gape worm? Or assume she may just have a respiratory issue.

Any guidance would be much appreciated!

Again, bright eyes, clear nose, she did poop when I brought her inside and its normal, full crop, just sneezing with gurgling wheezing, she also isnt lifting her head/throat up gasping at all.