Cuttlebones are not literally bones, they are the internal shells of cuttlefish.
Cuttlebone is a very important dietary supplement for birds. Apart from minerals, it provides a good source of calcium to birds in a quick and effective way and is able to meet the birds’ calcium intake requirements.
Blueberries are good for human, they are also good for birds but suggest to offer as snack only.
Reminder: The seeds/pits of some fruits are harmful to birds, please check 【Keep Seeds/Pits Of Fruit Far Away From Birds】
One day, I asked a bird food seller, what bird seeds can gain birds’ weight. He introduced me sunflower seeds, hemp seeds, and canary seeds. I were curious, besides gaining weight, what other benefits of canary seeds for birds? I summarize the findings as below from various websites. Small and medium sized parrots love canary seeds, but it is not suitable for large parrots because the size of seeds is too small for them. Canary seeds is high in fat, don’t treat it as regular meal for your birds.
Some friends asked me how to grow wheat grass (cat grass) for their birds. The method of planting wheatgrass is actually very simple, no matter by water or soil. I am going to introduce you the water-planting (hydroponics) method. I like water-planting because it is much more easier and convenient than soil-planting. You can even have harvest in just a few days. Growing your own wheatgrass is healthier for your birds because the grass is fresh and grown without chemicals. Wheatgrass seeds can be found in the shops/places where are selling plants.
To see the benefits of wheatgrass to birds, check this out. 【Can Birds Eat Wheatgrass?】
Care For Your Birds - Beginners' Guide【新手飼養雀鳥指南】 