Overweight budgie

So I just weighed the birds today... Ducky at a healthy 84 grams, Kermit at 62, but Bluebell weighed in at a whopping 48 grams! She has always had a weight problem, as she had an all seed diet for the first year of her life, but now she rarely gets any seeds or millet, only as the occasional treat. Her diet consists of Harrison's Adult Lifetime pellets, TOP's pellets, cooked whole grains like quinoa, and fresh veggies like broccoli and carrots. Her diet seems pretty good, (although not like Ducky and Kermit who eat a very wide variety of fruits and veggies) she is fully flighted and likes to fly, (although again, she is lazy compared to Ducky, who flies all around the house) so I really don't know why she's so overweight. Please help!!

In the short term see if you can get her to fly more, by doing this she will drop the excess fairly quickly.

If she is resistant then it would mean limiting her intake, cutting the carbs down, controlling how much pellet she eats. Exercise is the easier route.

I'm not sure how I can encourage her to fly more. She is not recall trained like my other birds, and training her would mean I have to give her treats, which would not help her weight problem. Besides, she is too stubborn to be trained. What are some ideas to encourage her to exercise without giving her any treats? I really would prefer the exercise route as opposed to limiting her food intake.

If Bluebell is the only one birdie out and she is focussing on you, can you get her to fly to your hand/shoulder? Call her, if you can get her doing this, once they learn something new she will do it again. If she is food motivated then rattle a pot that she recognises contains nice things.

Once they find their wings so to speak, it is much easier to get them to use them.

A treat can be just one seed.

It could be worth bearing in mind that 10% of her bodyweight is only 4.8g. See how much this is on a scale. She will not eat this much per day, nowhere near.

Hope this helps you with an idea of how much she actually needs per day.

does he play chase? if you put him on the floor will he follow you as you walk around? Maybe jogging will burn some of those calories off.

"Finding her wings" is not the problem, she often flies around the room for fun or to get to places, but the problem is I can't take her out of the bird room like with Ducky and Kermit for her to do more flying, she is stubborn so I can't really get her to fly if she doesn't want to at the moment, and she is not bonded to me like Ducky and Kermit. So she will not fly to me if I leave the room like my other birdies do, or will not chase me if I put her on the floor. This is why I'm really considering getting another budgie for her. The amount of flying she does now isn't working, so I would need to encourage her to fly more, which is difficult if I can't get her to follow me around without giving her treats. The problem with one seed is that you'll be doing this many times to get her the amount of exercise she needs, and giving her many seeds. And Bluebell being the only bird out would never work as Ducky and Kermit would be screaming and pacing the whole time, wondering why I'm ignoring them and Bluebell, who doesn't really want the attention, is getting all of it. I think the best solution would simply be encouraging her to come out of her cage more often. Often times, I'm focusing on either Ducky or Kermit and Bluebell's cage door is open, but she doesn't want to come out. If I take her out on my finger, she will likely fly around once she is out. Maybe I should feed her in meals instead of keeping the bowl in the cage?