Sentences with phrase «alarm calls»

The results presented here also suggest that African elephant alarm calls reflect the urgency of threats.

The pursuit of that disguised promise begins with the pain of an early alarm call.

I know I am after this morning's 5 am alarm call!

The staff were always helpful and friendly, the over night cabin was surprisingly a comfortable experience, with a gentle alarm call about an hour before docking.

I know I am after this morning's 5 am alarm call!

Communication of stimulus size and shape in alarm calls of Gunnison's prairie dogs.

Audio playback experiments demonstrate that African elephants produce alarm calls in response to the voices of Samburu tribesmen.

The variation in acoustic cues can be seen in examples taken from three species of Cercopithecus, in which vervet monkeys, C. aethiops, separate alarm calls by the location of dominant frequencies [2], Campbell's monkeys, C. campbelli, separate them by call duration, and by the location and dynamic changes in dominant frequencies [4], while Diana monkeys, C. diana, separate them by call duration, fundamental frequency, and formant frequency characteristics [5]--[7].

Safe and telephone are also available (payable locally), as well as alarm call service.

• Turkeys are sophisticated talkers with separate alarm calls for «ground predator!»

The traffic noise didn't deter the birds from feeding, but five times as many birds approached speakers when the researchers played alarm calls on their own compared with when traffic sounds were added.

Playback experiments by King et al. [22], [23] have shown that elephants run from the sounds of disturbed bees and also produce alarm calls that warn other elephants of the threat.

In the bee alarm call, on the other hand, there was an upward shift in F2 location, but F1 location remained similar to controls (Fig. 4).

Normally, northern cardinals listen to tufted titmouse predator alarm calls and will typically respond by fleeing or freezing until the danger passes.

«It not only provides the first demonstration that elephants use alarm calls but also shows that these may have very specific meanings.»

In fact, formant frequency and dominant frequency locations are common acoustic features that differentiate alarm calls in mammals -LRB-[2], [4], [7], [10], present study).

An avoidable amount of the tax payers» money each year is wasted due to false fire alarm call outs from the public sector.

There are deer everywhere and in the mornings as I head along estate tracks scaring herds of deer; I hear them making alarm calls before racing off away from me.

Megan Gall and Jacob Damsky of New York's Vassar College tested how traffic noise affected the reactions of Black - capped Chickadees and Tufted Titmice to titmouse alarm calls, which warn birds that a predator is nearby.

In general, increasingly threatening stimuli elicited alarm calls with increases in F0 and in formant locations, and increasing numbers of these acoustic cues in vocal stimuli elicited increased vigilance and flight behavior in listening elephants.

In response, the thornbill parents imitated alarm calls from between one and four different species, some of which can be heard in this video.

Con Slobodchikoff of Northern Arizona University in Flagstaff and his colleagues had previously shown that they produce different alarm calls in response to humans, coyotes, domestic dogs and red - tailed hawks.

Grade and his graduate adviser, UF / IFAS wildlife ecology and conservation professor Katie Sieving, tested the abilities of northern cardinals to hear the predator alarm of tufted titmice by playing alarm calls to cardinals through speakers in both noisy and quiet locations in Florida state parks.

He also emitted alarm calls normally used when a predator is near.

Alarm call outs, dealt with level sticks LR250, sensor all Siemens systems.

All rooms are equipped with in - bath shower, television, radio, telephone, tea & coffee tray, hairdryer, trouser press and alarm call service.

In 2009, they observed that these «humanized» mice produced more frequent and complex alarm calls, suggesting the human mutations may have been involved in the evolution of more complex speech.

Using speakers set up near feeding platforms baited with bird seed, they recorded the birds» responses to three different recordings — alarm calls alone, traffic noise alone, and a combination of the two.

Newbies may be seen as less reliable guards, or packs may have signature alarm calls that immigrants must learn.

A stuffed python on a fishing line has revealed that chimpanzee alarm calls have intentional meaning rather than being involuntary expressions of emotion

The researchers caution that they did not establish a causal link between highway noise and bird population reductions, although noise - disrupting alarm calls is a compelling possibility.

Now researchers have found that pigeons use wing noise to warn the flock about approaching enemies — the first example of a nonvocalized alarm call in birds.

«Father frogs will then attend to the eggs by sitting on them, possibly to keep the eggs hydrated, and they guard the eggs by standing between them and the entry hole where they will lunge at intruders and make loud alarm calls to keep them away,» Mr Seshadri noted.

Next, the researchers played recordings of the thornbills» alarm call imitations to currawongs.

It will take further experiments to show that the bee rumble means bees to other elephants and is not a more general alarm call, says Robert Seyfarth, a biological anthropologist at the University of Pennsylvania.

The acoustic features of elephant alarm calls represent separate types of threat (bees versus Samburu tribesmen) and reflect level of urgency.

Citation: Soltis J, King LE, Douglas - Hamilton I, Vollrath F, Savage A (2014) African Elephant Alarm Calls Distinguish between Threats from Humans and Bees.

Mammalian alarm calls are not always predator - specific.

For example, meerkats, Suricata suricatta, produce distinctive alarm calls in response to aerial and terrestrial predators, but the acoustic structure of the calls also varies according to the degree of urgency within predator classes [3].

Chuck alarm calls in Richardson's ground squirrel (Spermophilus richardsonii) increase when the alarm stimulus is closer and elicit greater vigilance [7].

It really is important that everyone understands what the fire alarm call points are for, and when they should be pressed — and why they really should not be pressed when there is no fire.

A fuzzy - neural system for identification of species - specific alarm calls of Gunnison's prairie dogs.

«For example, a human alarm call not only contains information about the intruder being a human, but also contains information about the size, shape (thin or fat), and color of clothes the human is wearing,» says Dr. Slobodchikoff.

His series of experiments on the development of species identification in birds illustrates the fruitfulness of his conceptual and theoretical approach, which also inspired my own work on alarm call responsivity of ducklings.

In a second experiment, we played the recorded vocal responses to resting elephants in order to examine their potential function as alarm calls.