Lesson 5 Flashcards
Signaling theory predicts?
Both the sender and receiver need to be benefit for the signal to be maintained.
Sound is?
The waves of air pressure.
Fourier analysis?
A complex time series can be viewed as the sum of a bunch of sine waves.
Sound waves flow around objects that are?
smaller than the wavelength.
Temperature in the air can affect sound. How? (2•)
•Sound travels slower in colder air
•Sound travels faster in warmer air
Sound reception?
Where you hear sound by determining which ear detects the sound first.
Pigment is a molecule that?
Absorbs a certain wavelength but not the other.
Carotenoids?
A certain pigment that produces red, yellow, and orange.
Eumelanins?
What makes black or brown.
Pheomelanins?
Dull red colours.
Interference in light?
When two parallel wavelengths have valley’s under peaks, then they cancel each other out while when the wavelengths that have valley’s under valley’s are embraced.
Rayleigh scattering?
When feathers have bubbles where red light goes through and blue light gets reflected.
Predicability graph of food? (x, y)
y = predictability of food
x = seasonal variability of food (breeding area)
How do birds navigate?
•Some birds use the sun compass
•Some uses use the stars called Nocturnal celestial navigation.
•
Sense of directions for birds? (•5)
•sun
•star
•Magnetic
•landmarks
•infrasound
Migration differs? (4•)
•Differs strongly between populations
•Is intermediate/mixed in hybrids
•Is likely inferior in intermediate form
•is likely to have a strong genetic component
Ring species?
