Overview

Spatial patterns

Individuals over the week

Heat maps of GPS position density for each collared animal over 1 week of logging. Densities calculated as number of positions logged within 2m cells. Plotted on log scale.

Heat maps of GPS position density for each collared animal over 1 week of logging. Densities calculated as number of positions logged within 2m cells. Plotted on log scale.

Hourly distance travelled

Hourly travel across the whole week

Pretty good evidence that no-flap weaners ran around a lot more in the first day or so of being on the lot, but then settled down to normal. Seems everyone ran around at least a bit more in the first day or so, but the no-flap calves, especially. These data are filtered to approximately daylight hours (04:00-21:00 daily).

Pretty good evidence that no-flap weaners ran around a lot more in the first day or so of being on the lot, but then settled down to normal. Seems everyone ran around at least a bit more in the first day or so, but the no-flap calves, especially. These data are filtered to approximately daylight hours (04:00-21:00 daily).

Hourly travel in first 48 hours

Zooming in on hourly distances travelled from 5pm the day calves entered the lot through 48 hours later. All calves had a big spike in activity between 0400 and 0600 their first morning in the lot, but pretty much only no-flap calves stayed pretty active until noon. No-flap calves alone had an activity spike that afternoon (17:00-19:00), and continued to be more active than flap calves pretty much through the night.

Zooming in on hourly distances travelled from 5pm the day calves entered the lot through 48 hours later. All calves had a big spike in activity between 0400 and 0600 their first morning in the lot, but pretty much only no-flap calves stayed pretty active until noon. No-flap calves alone had an activity spike that afternoon (17:00-19:00), and continued to be more active than flap calves pretty much through the night.

Hourly distance travelled summarized by treatment group for the first 48 hrs.

Hourly distance travelled summarized by treatment group for the first 48 hrs.

Cumulatively, no-flap calves travelled about twice as far as flapped calves in the first 48 hours on the lot. The difference is approximately 19 mi vs 9 mi over that period.

Cumulatively, no-flap calves travelled about twice as far as flapped calves in the first 48 hours on the lot. The difference is approximately 19 mi vs 9 mi over that period.

Space use by group within first 48 hrs

To illustrate the underlying data, here are the actual paths of calves from 16:00-17:00 on Sept 11, during the period of major activity shown in the hourly graphs. The additional distance per hour for the non-flap calves adds up to an average total of 10 additional miles walked in the first 48 hrs.

To illustrate the underlying data, here are the actual paths of calves from 16:00-17:00 on Sept 11, during the period of major activity shown in the hourly graphs. The additional distance per hour for the non-flap calves adds up to an average total of 10 additional miles walked in the first 48 hrs.

Overall, (1) no-flap calves generally explored the eastern side more and (2) flapped calves were particularly concentrated in the SW corner, instead of all along the west side like the no-flap calves. These data are for the first 48 hrs. Testing for any statistical pattern here is beyond my capabilities at this point.

Overall, (1) no-flap calves generally explored the eastern side more and (2) flapped calves were particularly concentrated in the SW corner, instead of all along the west side like the no-flap calves. These data are for the first 48 hrs. Testing for any statistical pattern here is beyond my capabilities at this point.