Are my silkies to thin?

[Princessred]

I live in Florida, and the temperature is dropping into the 50,s, is this cold for silkies? I can feel their breast bones. I feed them feed, also lettuce, peas, cabbage, Cheerios, zucchini.... I know the squirrels get a lot of their food, but their dish is never empty. They just don’t seem very meaty.

 

[Duck_life]

They should be getting proper chicken feed, flock feed, chick feed.. depending on age. They need a proper diet. 50's is not to low it got to 18 last night here and mine did just fine.