Which types of birds are absent on Galapagos islands when they were surveyed by Darwin

Options

A. Warblers and wood peckers
B. Carnivores
C. Cactus feeding
D. Seed eating.

Answer

To answer the question "Which types of birds are absent on Galapagos islands when they were surveyed by Darwin?", we can follow these steps:

### Step 1: Understand the Context
- Charles Darwin visited the Galapagos Islands and studied various species, particularly birds, which contributed to his theory of natural selection.

**Hint:** Think about the significance of Darwin's observations on the Galapagos Islands and the types of birds he encountered.

### Step 2: Identify the Types of Birds Present
- During his survey, Darwin observed several types of finches, which are now known as "Darwin's finches." These included:
- Seed-eating finches
- Cactus-feeding finches
- Insect-eating finches

**Hint:** Recall the specific types of finches Darwin studied and their feeding habits.

### Step 3: Analyze the Options Given
- The options provided are:
1. Rabblers and Woodpeckers
2. Carnivores
3. Cactus feeding
4. Sea eating

**Hint:** Look at the options and think about which birds are typically associated with the Galapagos Islands and which are not.

### Step 4: Determine Which Birds Were Absent
- Among the options, Rabblers and Woodpeckers are noted as absent from the Galapagos Islands during Darwin's survey.
- The other options (carnivores, cactus feeding, and sea eating) refer to types of birds that were present.

**Hint:** Focus on the specific birds mentioned in the options and recall which ones Darwin did not observe.

### Step 5: Conclude the Answer
- The correct answer is that Rabblers and Woodpeckers were absent on the Galapagos Islands when Darwin surveyed them.

**Final Answer:** Rabblers and Woodpeckers.

### Summary of Steps:
1. Understand the context of Darwin's visit.
2. Identify the types of birds he observed.
3. Analyze the options given.
4. Determine which birds were absent.
5. Conclude with the correct answer.