1. Daphne Major

2. The Galapagos Finches
The Island Daphne Major, Galapagos.(Photo, Kenneth D. Bergman)
For more than 30 years, scientists have been studying the populations of finches and their ecosystem on one very tiny island: Daphne Major. The island is small enough that the scientists have been able to directly observe a large proportion of the birds that live on the island.
Intro from:

3. What do you wonder? What I notice? 67L&R

4. Discuss with the person sitting next to you!!

5. Death and Survival in the Galapagos
Scientists saw the same thing you did….
Beginning in 1976 and continuing through 1977, a large majority of the finches died.
The scientists investigated this important change in the finch population. They asked these two questions:
Why are so many finches dying?
Why are some of the finches able to survive?

6. Studies of the Galapagos Finches
An important part of studying populations is understanding how individuals vary from one another. To examine this, the scientists were able to place colored bands on the birds' legs so they could tell them apart.

7. Studies of the Galapagos Finches
What is some data that scientist might gather to figure out why finches are dying and what are allowing some to survive?

8. Studies of the Galapagos Finches
Physical characteristics
Behavior of the birds
Mating
Foraging for food
Evading predators.
To study the birds' interactions with other species, they tracked the vegetation and predators on the island.

9. Daphne Major Investigation 68R
Summarize:
What TWO questions scientist have about the Finch population?
Information of what we know about Daphne Major island so far
How scientist are studying/keeping track of birds
What type of data are scientist collecting

10. Daphne Major Finch Population Construct a scientific explanation to answer the following research questions: Why are so many finches dying? Why are some of the finches able to survive?
Instructions to access website…..

11. 72R Question 1: What caused the ground finch population to decline?
Claim: The ground finch population declined after 1977 because . . .
Evidence: (any data relating to why the finch population declined)
The data shows (include numbers or data here)
The graph shows (include numbers or data here)
Reasoning: The finches population declined because . . .

12. Expected Student Response (proficient)
Claim: The ground finch population declined after 1977 because there was less rainfall causing a lack of food for the finches.
Evidence:
The rainfall measurement graph shows there was no rainfall in the dry season of 1976, only 25 cm in the wet season of 1976, and no rainfall in the dry season of The plants that were affected were cactus that saw a decline in number of seeds produced after dry 1976 from 230 seeds to dry 1977 had 20 seeds. Chamaesyce had 21 seeds in 1976 but in dry 1977 there were no seeds. Portulaca had 130 seeds in 1976 but they declined to none during dry 1977.
Reasoning: The data shows that there was little rain which caused plants to produce less seeds. With less seeds produced, the finches food supply was limited which caused many finches to die of starvation.

13. Daphne Major Finch Population Construct a scientific explanation to answer the following research questions: Why are so many finches dying? Why are some of the finches able to survive?

14. Pg 73R Question 2: Why are some of the finches able to survive?
Claim: The finches who were able to survive past 1977 had . . .
Evidence:
The data shows those that survived had _____ (be specific give numbers/data here) in comparison to the non survivors ____ (be specific here give numbers/data).
Scientist observed . . .
Reasoning: The finches were able to survive because

15. 76L: Together….Create Comparison Graphs Decide as a group which comparison graphs you want to look at….to better support what you currently know about: Why are so many finches dying? Why are some of the finches able to survive?
Data manipulated
andoutcome