The western jackdaw is found from north-west Africa through all of Europe, except for the extreme north, and eastwards through central Asia to the eastern Himalayas and Lake Baikal. To the east, it occurs throughout Turkey, the Caucasus, Iran, Iraq, Afghanistan, Pakistan, and north-west India.he common name jackdaw first appeared in the 16th century, and is thought to be a compound of the forename Jack, used in animal names to signify a small form (e.g. jack snipe), and the archaic native English word daw. Formerly, western jackdaws were simply called daws.
What Causes Muscle Cramps in the Calves? Leg cramps can be caused by many conditions, ranging simply from dehydration to something much more serious such as kidney disease, said physical therapist Matthew Hyland, president of the New York Physical Therapy Association and co-owner of Rye Physical Therapy & Rehabilitation.
Cramps often result from vigorous exercise, trauma to the muscle, or keeping the leg in an awkward position for too long, such as sitting in a crowded theater. Other causes can include medications such as birth control, diuretics (which are often prescribed for people with high blood pressure) and steroids. A lack of potassium or calcium can also be the underlying cause, as well as cold weather.. Acute leg cramps frequently are confused with restless legs syndrome (RLS) . But RLS is a different and more serious, chronic condition characterized by discomfort and persistent throbbing and pulling sensations in the legs.