Without being able to see the unit - or knowing where you're from... my immediate thought is that it is an economy or power-saving setting.
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pick up a shell at the beach or a stick and drop it at the nest...no really. that's the most you can do with the nest.
On the five island. Where do you get sapphire just above the professor there is a yellow box. Nest ball is in there
I have Pokemon Black, but they may be similar! To remove the nest, you must first defeat the gym leader, who will ask oyu to meet him at the cave. He will be the one to remove the nest so that you may enter
In Pokémon FireRed, you can find Nest Balls in Team Rocket's Hideout in Silph Co. and in Team Rocket's Warehouse on Five Island and you will also be given a Nest Ball from the Lady in the Water Path in which measures the sizes of Heracross trainers have captured and if the Heracross breaks a record then she will give you a Nest Ball.
You can purchase them at the pokemart in verdanturf.