Data

Variables:

at bucket (1), at ground dish (2), forage (3), glean (4), NIV (5), probe (6), swallow (7), other (8)

IDs:

75, 78, 0

Measures:
  • Total duration (forage, NIV, other)
  • Total duration (at bucket, at ground dish)
  • Proportion of time (forage, NIV, other)
  • Proportion of time (at bucket, at ground dish)
  • Number of occurrences (glean, probe, swallow)

Questions:

1a. What proportion of the total time do birds spend foraging? 1b. Does the proportion of time foraging differ between the two birds?

2a. What proportion of the total time do birds spend at the bucket and at the ground dish? 2b. Does the proportion of time birds spend at the bucket and at the ground dish differ between the two birds?

3a. How may times do the birds glean, probe, and swallow? 3b. Does the number of times the birds glean, probe, and swallow differ between the two birds?

1a. What proportion of the total time do birds spend foraging?

  • x-axis = behavior: foraging, NIV, and other for all three IDs (Behavior)
  • y-axis = proportion of time

1b. by individual

## 
##  Wilcoxon rank sum test with continuity correction
## 
## data:  Prop.time.for[Bird.for == "75-18"] and Prop.time.for[Bird.for == "78-18"]
## W = 489.5, p-value = 0.1069
## alternative hypothesis: true location shift is not equal to 0

2. What proportion of the total time foraging do birds spend at the bucket and at the ground dish?

  • x-axis = behavior: bucket and ground dish for all three IDs (Behavior.location)
  • y-axis = proportion of time

once all data are in, I need to change to proportion of time foraging vs proportion of total time

2b. by individual

## 
##  Wilcoxon rank sum test with continuity correction
## 
## data:  Prop.time.for[Bird.for == "75-18"] and Prop.time.for[Bird.for == "78-18"]
## W = 489.5, p-value = 0.1069
## alternative hypothesis: true location shift is not equal to 0

3. How may times do the birds glean, probe, and swallow?

  • x-axis = behavior: glean, probe, and swallow for all three IDs (Behavior.counts)
  • y-axis = number of occurrences

Given what time period?

3b. by individual

differences between birds: gleaning

## 
##  Wilcoxon rank sum test with continuity correction
## 
## data:  No.occur.bird[Bird.for == "75-18" & Beh.occur == "glean"] and No.occur.bird[Bird.for == "75-18" & Beh.occur == "glean"]
## W = 392, p-value = 1
## alternative hypothesis: true location shift is not equal to 0

differences between birds: probing

## 
##  Wilcoxon rank sum test with continuity correction
## 
## data:  No.occur.bird[Bird.for == "75-18" & Beh.occur == "probe"] and No.occur.bird[Bird.for == "75-18" & Beh.occur == "probe"]
## W = 392, p-value = 1
## alternative hypothesis: true location shift is not equal to 0

differences between birds: swallowing

## 
##  Wilcoxon rank sum test with continuity correction
## 
## data:  No.occur.bird[Bird.for == "75-18" & Beh.occur == "swallow"] and No.occur.bird[Bird.for == "75-18" & Beh.occur == "swallow"]
## W = 392, p-value = 1
## alternative hypothesis: true location shift is not equal to 0