Q: A radiotransmitter package for an adult male American woodcock weighs 4 g. If the bird weighs 135 g, what percentage of its body weight is the transmitter package? Provide the formula used.

2.96% using $$\frac{4}{135} \times 100\%$$

Q: If a transmitter emits a signal at 150.540 MHz, how many cycles per second does this represent? Provide the formula used.

150,540,000 cycles per second using $$150.540 \times 10^6$

Question 1

Which of the following is a primary reason for using radiotelemetry in wildlife studies?

Accepted Answer

To study movements, survival, and behavior of individual animals

Question 2

A radiotransmitter package for an adult male American woodcock weighs 4 g. If the bird weighs 135 g, what percentage of its body weight is the transmitter package? Provide the formula used.

Accepted Answer

2.96% using $$\frac{4}{135} 	imes 100\%$$

Question 3

Which transmitter attachment method for American woodcock is associated with reduced mortality but some transmitter loss?

Accepted Answer

Single wire belly loop

Question 4

What is the ideal maximum weight of a radiotransmitter package relative to the weight of the target animal?

Accepted Answer

≤3% of body weight

Question 5

Which of the following is NOT a recommended practice for minimizing the effects of radiomarking on wildlife?

Accepted Answer

Ignoring post-attachment behavior

Question 6

The life expectancy (LE) of a radiotransmitter battery is given by $$LE = \frac{C}{av}$$, where $$C is $$capacity and $$av is $$current drain. Which action will maximize battery life?

Accepted Answer

Increase battery capacity and decrease current drain

Question 7

Which piece of radiotelemetry equipment is responsible for detecting and amplifying the signal from the transmitter?

Accepted Answer

Receiver

Question 8

Which type of receiving antenna is most standard for in-field use due to its ability to indicate signal direction?

Accepted Answer

3-element Yagi antenna

Question 9

When using a 3-element Yagi antenna, what is the best way to determine the direction of the transmitter?

Accepted Answer

Swing the antenna around and point in the direction of the loudest signal

Question 10

Which environmental factor is LEAST likely to interfere with radiotelemetry signal transmission?

Accepted Answer

Sunlight

Question 11

What is a 'null point' in radiotelemetry, and how is it identified?

Accepted Answer

The point where signal intensity first drops; identified by a decrease in pulse intensity/volume

Question 12

How does increasing the gain setting on a receiver affect the position of null points?

Accepted Answer

Null points move farther apart

Question 13

Which scenario best illustrates the use of homing in radiotelemetry?

Accepted Answer

Approaching the animal on foot while constantly listening to the signal and marking the location when close

Question 14

What is a major advantage of triangulation over homing in radiotelemetry?

Accepted Answer

Triangulation allows for accurate location without approaching the animal

Question 15

Which of the following is NOT a basic function of a radiotelemetry receiver?

Accepted Answer

Transmitting a signal

Question 16

If a transmitter emits a signal at 150.540 MHz, how many cycles per second does this represent? Provide the formula used.

Accepted Answer

150,540,000 cycles per second using $$150.540 	imes 10^6$

Question 17

Which of the following is a plausible negative effect of radiomarking on animals?

Accepted Answer

Unusual behavior and increased mortality

Question 18

Which antenna type is best at indicating signal direction and distinguishing true from false bearings?

Accepted Answer

3-element Yagi antenna

Question 19

A researcher wants to maximize the battery life of a radiotransmitter. Which combination of battery capacity and current drain should they choose?

Accepted Answer

High battery capacity and low current drain

Question 20

Which of the following is a real-world application of wildlife radiotelemetry?

Accepted Answer

Tracking the migration routes of birds to study habitat selection

Wildlife Radiotelemetry: Principles, Equipment, and Field Techniques

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