Congrat's on your new bird !!!!!
What bird did you get, and how old?
Have you named him yet?
Besides a new environment, everything is new and strange to him.
The cage, toys and a new guardian.
It takes a while for a bird to gain trust, which is vitally important.
By sitting in his cage he feels protected and secure.
Make no sudden movements or noise, they scare easily.
Leave the cage door open, sit nearby at just talk to him.
The more you interact with the bird, he will become accustomed to you and your voice.
Keep doing this daily, birds thrive on routine.
Don't attempt to take him out, when he feels more secure and trustworthy, he should start coming out, in his own time.
Give him treats daily, through the bars at first.
Leave a treat by the door of the cage.
Hopefully he will be inquisitive, start moving towards the door and taking the treat.
This process could take days, even weeks, preserver and be very patient.
Enjoy your new bird, they are so precious
Let us know how he's progressing
Good luck
Take care