Canary birds can suffer from a variety of eye problems, including conjunctivitis, cataracts, and eye infections. Conjunctivitis, also known as pink eye, is a common eye condition in canaries that causes redness and inflammation of the eye. Cataracts can also develop in canaries, leading to cloudiness in the eye and potentially affecting their vision. Eye infections, such as bacterial or fungal infections, can cause symptoms like discharge, swelling, and irritation in the eyes of canaries. Regular monitoring of a canary's eyes and seeking veterinary care if any issues arise can help prevent and treat these eye problems. **

Budgerigars are considered nomadic birds. They are known to move in search of food and water, and their movements are often influenced by changes in weather and resource availability. While they do not have a set migration pattern like some bird species, they are not sedentary and can cover large distances in search of suitable habitats. **

It is unclear what is meant by "birds are behind birds" without further context. It could refer to birds following other birds in a flock, birds being positioned one after the other in a line, or birds being hidden or obscured by other birds. The interpretation would depend on the specific situation or scenario being described. **

Angry Birds Epic may not work for a variety of reasons, such as compatibility issues with the device or operating system, bugs or glitches in the game, or server problems. It is also possible that the game requires an internet connection to function properly, and if the connection is unstable or slow, it may cause the game to not work correctly. Additionally, if the game has not been updated to be compatible with the latest software updates, it may not work as intended. **

Birds have complex cognitive abilities and are capable of problem-solving, learning from experience, and using tools. They can exhibit behaviors that suggest they are capable of thinking, such as planning for the future, recognizing themselves in a mirror, and even displaying empathy towards others. While their brains are structured differently from mammals, birds have shown impressive cognitive skills that indicate they are capable of some form of thinking. **

Birds do not have a separate urinary system like mammals do, so they do not pee in the same way. Instead, birds excrete waste in the form of uric acid, which is combined with their feces and expelled together. This mixture is often seen as a white, chalky substance. So, while birds do not pee in the traditional sense, they do excrete waste through a different process. **

No, birds do not have the ability to spit like humans do. Birds do not have salivary glands in their mouths like mammals do, so they do not produce saliva in the same way. Instead, birds have a specialized gland called the uropygial gland near the base of their tail that produces an oily substance used for preening and waterproofing their feathers. **

No, birds cannot cry in the same way that humans do. Birds do not have tear ducts like humans, so they are not able to produce tears to express emotion. However, birds can still exhibit signs of distress or sadness through their vocalizations and body language. So while they may not cry in the same way as humans, they can still communicate their emotions in other ways. **