budgie sexing and fence spacing

[gerigerbil]

hi , new here. had these two guys for over five months. i would like to breed them. could anyone tell me if they are male and female? 








also, my balcony is fully fenced BUT the bar spacing is of squares of 4.5cmx4.5cm (or 1.77 inches). is that small enough too keep them from getting out? now it seems too big. but maybe they will grow enough not to? it would be amazing to let them get some outdoor sun and air. anyone ever tryed?

[Jane]

I’d say the blue budgie is female and the greeny blue yellow one is a male. The bar spacing you describe is far too big. Maximum bar spacing for a budgie is 1.2cm, no more.

[Hezz]

You can go up to 15mm (1/2 inch) for safe bar/mesh spacing for budgies. Anything bigger can cause safety issues (head stuck for instance). Your bird will simply go straight through the holes with what you currently have.

Agree with Jane, blue is a hen, yellow-faced a male.