What does the proverb "An old bird is not to be caught with chaff" mean?

• Proverb: An old bird is not to be caught with chaff
English Meaning: Experienced people are not easily deceived or tricked.
Bangla meaning: অভিজ্ঞ লোক সহজে বোকা বনে না বা ধোঁকা দেওয়া কঠিন।

Other Options:

• All that glitters is not gold. / Don't judge a book by it's cover.
- চকচক করিলেই সোনা হয় না।

• All seems yellow to the jaundiced eye.
- পক্ষপাতদুষ্ট লোকের কাছে সবাই মন্দ।

• An Ethiopian will not change his skin.
- কয়লা ধুইলে ময়লা যায় না।

Source: Lecture.