? fertile eggs or not?

[leopard74]

Hello guys,
my both ringnecks sitting on eggs for about a month. Is it sure if they are sitting on eggs, that means eggs are fertile? Because she lay last egg on 31 July and today 30 August. both Still sitting in box. Does weather effects the time period? It was cold (10-15 Celsius) in Adelaide last month.
This is first time she lay eggs.
Thanks

[Johan S]

Why don't you candle them and see if they developed?

[leopard74]

Why don't you candle them and see if they developed?

I don't know how to do that.

[rod038]

I would give them another week. The first egg can hatch up to 30 days from being laid then the rest can hatch over the next few days.