There is some disagreement among budgie breeders about whether or not the natural phenol found in and emanating from shavings from pinewoods is harmful to budgies. Some believe that it can be, while others contend that there is no evidence to support this claim.
Regardless of the opinion on this topic, it would always be best practice to avoid using pinewood shavings as a bird feeder material, as the phenols present could potentially be harmful.