Post by Taz on Apr 11, 2019 18:14:13 GMT
Welcome Bob,
Hours of fun begins right here!
All the behaviour of your BT's seem normal, they do peck at the perspex and the nest material is usually bought back and forward.
I believe it's only the female that builds the nest, so the one bringing in the material is more than likely a female. She is also the only one that does any housekeeping as in removing poop.
Enjoy the season,
Taz