What’s this!

[Maddog_photog]

Saw this on my lil baby Swedish Blue’s back, above the tail but behind the wing. What is it!? I think it’s in the area of what duck biologists call the “thing that produces floaty duck oil”. Is that what this is, or..??

 

[Isaac 0]

Oil Gland(Uropygial Gland) !

 

[Maddog_photog]

Got it! Good to know!