In one sentence, describe what the following article is about: If your bird is sick, there are times when you should not try to care for it at home and you should get it to a vet right away. Signs that your bird is seriously ill and needs immediate professional veterinary care include:  No activity or movement like normal Puffed up feathers for more than a few minutes A change in the consistency of its droppings, such as more liquid than usual A lack of eating or drinking Inability to stay on its perch Falling over Seizures or convulsions Difficulty breathing Take note of when you notice that your bird is feeling unwell so that you can track how long this illness lasts. If your bird is unable to get rid of its illness in a week, even with you providing it ideal care, you should have it seen by a veterinarian. There is no reason to prolong its suffering when you could get it professional help. Your bird can get very sick quickly, so don't wait a long time for it to get better before taking it to a vet. Your vet will assess your bird's illness and then give you a diagnosis. Once the vet knows what is wrong, they can give you medicine and supplements for your bird if it needs medication, is not eating well, or is dehydrated. There are some illnesses that require veterinary intervention to get rid of, such as serious bacterial infections. Caring for these illnesses properly is especially important with infectious diseases if you have other birds that could get sick too.
Summary: Take your bird to the vet if they show signs of severe illness. Go to the vet for a checkup if your bird has been unwell for over a week. Follow your vet's instructions for care.

Problem: Article: When you listen to music, you have probably noticed that it's not all at the same volume, all the time. Some parts get really loud, and some parts get really soft. These variations are known as "dynamics."  If the rhythm and meter are the heart of the music, and notes and keys are the brains, then dynamics are surely the voice of the music. Consider the first version above. On your table, tap out: 1 and 2 and 3 and 4 and 5 and 6 and 7 and 8, etc. (the and is how musicians "say" eighth notes). Make sure every beat is tapped at the same loudness, so that it sounds a bit like a helicopter. Now take a look at the second version. Notice the accent mark (>) above every F note. Tap that out, only this time, accent every beat that you see the accent mark. Now, instead of a helicopter, it should sound more like a train. With just a subtle shift in accent, we completely change the character of the music! Just like you don't always talk at the same level—you modulate your voice louder or softer, depending on the situation—music modulates in level too. The way the composer tells the musician what is intended is by using dynamic markings.  There are dozens of dynamic markings you may see on a piece of music, but some of the most common ones you'll find will be the letters f, m, and p.  p means "piano," or "softly."  f means "forte," or "loud."  m means "mezzo," or "medium." This modifies the dynamic after it, as in mf  which means "medium loud", or mp, which means "medium soft." The more ps or fs you have, the softer or louder the music is to be played. Try singing the example above (using solfège—the first note in this example is the tonic, or "do"), and use the dynamic markings to notice the difference. Another very common dynamic notation is the crescendo, and it's corollary, the decrescendo or "diminuendo". They are a visual representations of a gradual change in volume which look like stretched-out "<" and ">" symbols.  A crescendo gradually gets louder, and a decrescendo gradually decreases the volume. You'll notice that, with these two symbols, the "open" end of the symbol represents the louder dynamic and the closed end represents the quieter dynamic. For example, if the music directs you to gradually go from forte to piano, you'll see an f', then a stretched out ">", then a 'p'.  Sometimes a crescendo or diminuendo will be represented as the shortened words cresc." (crescendo) or dim. (diminuendo).
Summary:
Get loud—or get soft! Play it piano, or fortissimo, or somewhere in between. Get louder and louder and louder, or quieter and quieter and quieter.