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Disrupting the birds' light and dark cycles can impact circadian rhythms, eventually harming sleep patterns. Biologist Thomas Raap conducted a study which suggested that exposure to ALAN affected the sleep behavior of Eurasian blue tits (Cyanistes caeruleus). [7] In this study, birds woke up earlier due to ALAN factors such as seasonal timekeeping.
Domestic chickens can be observed to have different states of alertness. Hens exhibit fear by increasing the time spent standing alert and increased preening. Before empathy in chickens was reported, other investigations demonstrated that hens avoid environments associated with higher preening rates and standing. [4]
Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...
Dogs presented with images of either human or dog faces with different emotional states (happy/playful or angry/aggressive) paired with a single vocalization (voices or barks) from the same individual with either a positive or negative emotional state or brown noise. Dogs look longer at the face whose expression is congruent to the emotional ...
The researchers found that people who were early birds had a 23% lower risk of developing major depression for every hour earlier they reached their midpoint of sleep (that is, the middle of their ...
While in unihemispheric slow-wave sleep, birds will sleep with one open eye towards the direction from which predators are more likely to approach. When birds do this in a flock, it's called the "group edge effect". [2] The mallard is one bird that has been used experimentally to illustrate the "group edge effect". Birds positioned at the edge ...
A new bird flu strain was detected on a California duck farm. But what's the difference between H5N9 and H5N1, and is it safe to eat poultry? A doctor explains.
One technique of hypnosis is to hold the chicken face up with its back on the ground, and then run a finger downwards from the chicken's wattles to just above its vent. The chicken's feet are exposed, which allows easy application of medication for foot mites, etc. Clapping hands or giving the chicken a gentle shove will waken it.