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Some bat species like the spotted bat survive by migrating in search of food to warmer areas when it gets chilly. The Northern long-eared bat spends winter hibernating in caves and mines.

Bats have few natural predators — disease is one of the biggest threats. The disease — named for a white fungus on the muzzle and wings of bats — affects hibernating bats and has been detected in 37 states and seven Canadian provinces. This deadly syndrome has decimated certain species more than others. Scientists are working to understand the disease. You can help by avoiding places where bats are hibernating.

If you do go underground, decontaminate your clothing, footwear and gear to help with not spreading this disease to other areas. A tri-colored bat shows symptoms of white-nose syndrome. Photo by National Park Service. Without bats, say goodbye to bananas, avocados and mangoes. Over species of fruit depend on bats for pollination. Bats help spread seeds for nuts, figs and cacao — the main ingredient in chocolate.

Just like a hummingbird, the lesser long-nosed bat can hover at flowers, using its 3-inch-long tongue — equal to its body length — to feed on nectar in desert environments. Photo by Merlin D. Tuttle, Bat Conservation International. Night insects have the most to fear from bats.

Each night, bats can eat their body weight in insects, numbering in the thousands! Back to Health A to Z. Babies sometimes develop a flattened head when they're a few months old, usually as a result of them spending a lot of time lying on their back. In most cases they aren't a major cause for concern, as they don't have any effect on the brain and the head shape will often improve by itself over time.

Your baby won't experience any pain or other symptoms, or any problems with their general development. A young baby's skull is still relatively soft and can change shape if there's constant pressure on a particular part of their head.

Occasionally, a flattened head can be caused by the plates of the skull joining together too early. This is known as craniosynostosis. Speak to your health visitor or GP if you're concerned about the shape of your baby's head or think they may have problems turning their head. A slightly flattened head isn't usually anything to worry about, but it's a good idea to get advice early on so you can take steps to stop it getting any worse. Medically reviewed by Karen Gill, M.

What you can do to stop it. When it could be cause for concern. Could it be autism? When to talk with your doctor. The bottom line. Parenthood Toddler. Read this next. When Are the Toddler Years? Medically reviewed by Carissa Stephens, R. How to Stop Your Toddler from Biting.

Medically reviewed by Kristen M. Moyer, MD. Medically reviewed by Mia Armstrong, MD. Recent Examples on the Web: Noun There's always one shot that leaves a golfer shaking his or her head. Harry Jones, Ramona Sentinel , 19 July Now, Maineri heads into year 12 with 18 pitchers on his roster, hoping that rising junior Caleb Gilbert and sophomore-to-be Zach Hess will emerge at the top of the pitching rotation. First Known Use of head Noun before the 12th century, in the meaning defined at sense 1 Adjective before the 12th century, in the meaning defined at sense 1 Verb before the 12th century, in the meaning defined at transitive sense 1.

Learn More About head. Time Traveler for head The first known use of head was before the 12th century See more words from the same century. Watch More on head. Statistics for head Look-up Popularity. Style: MLA. More Definitions for head. Kids Definition of head Entry 1 of 3. Kids Definition of head Entry 2 of 3. Kids Definition of head Entry 3 of 3. Medical Definition of head. Other Words from head head adjective.



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