Blog

Calving Season Pushes Bison Herd to Over 70

Photo by Michael Leggott

The 2017 calving season got off to an early start this year with our fist calf arriving on April 2nd. Since then, we have added 15 more. 14 from the main herd and 2 from the research herd near the Nature and…

Habitat Management Plan for the Regal Fritillary

How the Monitoring Plan at the Trust Acts as a Model for Species Conservation
Josh Wiese, Biological Science Technician

Andrew Caven, Lead Biologist

Scarce availability of relic tallgrass prairie has had a major impact on many species of native wildlife in the Platte River…

Spring Burning and the Fire Hawks

Andrew Caven, Lead Biologist Kelsey King, Volunteer Coordinator

Controlled burning has a very positive and interesting impact on prairie ecosystems. Before the advent of roads and agricultural infrastructure lighting strikes would have often cause fires that ran across the prairie, being halted only by…

Sandhill Crane Counts – Week 8

Andrew Caven, Lead Biologist

Given low cloud ceilings and morning fog we missed week 7 of surveys this year. However, we squeaked out week 8; this past Tuesday morning we were up before sunrise and completed a count. We counted 117,000 Sandhill Cranes with a relative…

Sandhill Crane Counts – Week 6

Andrew Caven, Lead Biologist

Our aerial count for this week are 208,600, with an absolute error of +/-12.9%. We had a mechanical malfunction on the plane before takeoff and had to change a light. This set us back about 20 minutes in terms of start time; this…

Sandhill Crane Counts – Week 5

Andrew Caven, Lead Biologist

Our aerial count for this week was 404,000, with an absolute error of +/-8.6%. It was cold and bumpy this week, but better conditions for counting than the last. Overcast skies delayed the start and we had a number of birds in the…

Sandhill Crane Counts – Week 4

Andrew Caven, Lead Biologist

Our aerial count for this Wednesday morning was 406,000, with an absolute error of +/-13.5%. We had a strong tail wind this morning and flew the route at a significantly faster pace than usual, forcing us to count a large number of…

Sandhill Crane Counts – Week 3

Andrew Caven, Lead Biologist

Our aerial count for this week was 194,825 Sandhill Cranes (Relative Error: -7.3%; so our reported number is likely a little bit low). SACRs were present in survey bridge segment one (Chapman, NE) to segment 8 just east of Kearney, NE. Cranes were…

Sandhill Crane Counts – Week 2

Andrew Caven, Lead Biologist

Our aerial count this week was 66,000 Sandhill Cranes (Absolute Error +/- 7.1%). SACRs were present in survey bridge segments 1, 3, and 4 in large roosts with the vast majority off of Mormon Island at the Crane Trust. We also detected a…

Sandhill Crane Counts – Week 1

Andrew Caven, Lead Biologist

The Crane Trust is back to flying the 90 mile route from Chapman, NE to Overton, NE. Our aerial count for the morning of Monday, February 13th, was 8,146 Sandhill Cranes. These were almost exclusively in bridge segment three (of eleven) from HWY 281…