Phys.org: Paris has successfully cut noise pollution, but urban birds still can't sing at their natural pitch
Paris has successfully cut noise pollution, but urban birds still can't sing at their natural pitch
Portland Press Herald: Birding: Noise pollution impact birds on so many levels
Detroit Free Press: Noise pollution harming bird populations. This is what it does
A University of Michigan study found noise pollution has a significant negative impact on wild birds. Noise can interfere with mating calls, parent-offspring communication, and predator detection.
The Conversation on MSN: Paris has successfully cut noise pollution, but urban birds still can’t sing at their natural pitch
Paris has successfully cut noise pollution, but urban birds still can’t sing at their natural pitch
Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems. You may have trouble doing normal day-to-day activities, and sometimes you may feel as if life isn't worth living.
Hypertension can be diagnosed by performing careful and repeated measures of the blood pressure. Blood pressure categories include normal blood pressure, defined as a systolic pressure less than 120, and a diastolic pressure less than 80. Elevated blood pressure is defined as a systolic pressure 120 to 129, and a diastolic pressure less than 80.
Popular Science: Why do birds make so many different sounds? 100,000 audio recordings offer clues.
Why do birds make so many different sounds? 100,000 audio recordings offer clues.