CROWS Flashcards
Ravens habitat and eating habits
Wild land, eats carrion
Crows eating habits and habitat
More urban eats more garbage
Crows live for
14-17 years and 30 years in captivity
Crows reach sexual maturity
2-4 years old
Crows mating partners are
They are socially monogamous but they sleep around
How much percent of the clutch is sited by the social mate
80%
American crows engage in what type of breeding
Cooperative breeding
Which sex of crows cheat and how
Female crows sneak out at dawn to reproduce with males that are not their mates
Why do females cheat?
It isn’t a conscious choice but they do so for genetic diversity of their offspring and they do so for resources
Why is there incentive for the cheating male party to let the cheating happen
Because the males have an unlimited amount of eggs so they can afford to, and they want the most offspring they can get
Red winged blackbird females do what to other females
Chase them out of their territories
If you get attacked by a crow why is it that this happened ?
Because you might have gotten too close to a baby crow
Baby birds have what to make their parents have an easier time feeding them?
Yellow pink at the bottom of beak
Why do crows engage in communal roosting
Anti predator (safety in numbers), warmth possibly information sharing (following birds that seem like they have something)
What is communal roosting in winter for crows
They communally roost in winter and that just means that they travel together in flocks of several dozen or hundreds of thousands of birds
Intelligence
Ability to flexibly solve new problems using cognition or reason instead of instinct or trial and error learning.
Is the song sparrow system intelligent? And why or why not
It’s not because its complex but not intelligent
Is gull breaking clams intelligent?
No trial and error because they do it on water sometimes
Crows breaking clams is it intelligent?
Yes because they do it on a hard surface and do it purposefully
Incidental harvest for medicine
Devil’s club
Selective harvest
Cedar bark
Transplanting
Red huckleberry
Burning
Big huckleberry
Tilling
Camus
Pruning for berry production
Salmonberry
Weeding
Crabapple
