Help! Ayam Roo is "sleepy" and liquid is coming from his beak and Silkie Hen is "tired" and doesn't really want to eat/open her beak

[BahiyyihAyam]

UPDATE: The silkie, Daisy has passed away… I am so distraught. I am in the car right now and when I checked on her, she was already stiff… dead. Thank you for your help I do believe it was a respiratory infection… but do you think that it could be passed to my cats or us humans?

 

[Wyorp Rock]

This is the dewormer we used and a picture of the silkies eye. I opened her eye but I don't see any bubbles. But now she is breathing hard and doesn't want to move around too much.

I'm sorry to hear she died.

There's several respiratory diseases that poultry can have. A couple of the more common ones are Mycoplasma and Infectious Bronchitis.
The only way to really know what you were dealing with is to have necropsy/testing through your state lab. If you still have the body, then keep it cold and make arrangements to get it to the state lab. https://www.metzerfarms.com/poultry-labs.html

Here's some reading about the various disease poultry can have
https://edis.ifas.ufl.edu/publication/ps044