你知道嗎？在陽光下，雀鳥看到比我們更豐富的色彩！
我們怕的紫外線，對雀鳥卻是非常重要。
陽光的用處包括：
令皮膚產生維生素D，幫助雀鳥骨骼、喙、羽毛的生長。
增強雀鳥的免疫系統。
殺死羽毛和皮膚上的細菌（最近發現，陽光甚至能殺死致命的PDD病毒。）
甚至減低鳥兒患癌症的機會。
預防雀鳥（特別鸚鵡）患上焦慮和抑鬱症。
增強雀鳥的視覺能力。
自然陽光只能在外面到達。在窗戶旁邊放置鳥籠是不夠的，因為大部份玻璃帶色，會阻擋90％的太陽紫外線，所以不能幫助生產維生素D。
除此之外，太陽下雀鳥可以看清楚另一隻雀鳥的顏色、外表等等，這樣對於佢哋求偶很重要呢！
Birds need to get tan~
Do you know? Birds see richer colors than us under the sun!
It produces strong bones, beaks, and aids in feather production.
It builds the immune system.
It kills germs and bacteria on the feathers and skin (and it has been recently discovered that direct sunlight kills the deadly PDD virus on surfaces.)
It minimizes the chances of developing certain cancers.
It reduces anxiety and depression.
It enhances a bird’s vision.
Natural sunlight can only be reached outside.
Case by case, setting your bird’s cage by the window may not be enough. Some glass blocks out 90% of the sun’s UV rays, even screens block out 30%, so there may not be any gain for vitamin D production.（Source: http://www.birdtricks.com/blog/the-importance-of-natural-sunlight-for-your-parrot/）
In addition, birds will be able to see clearly the color, appearance, etc. of another bird under the sun, which is very important for their partnering!