Crane Migration Update: April 3, 2009
Still in Florida >>
Species Math: How Many Left? >>
Story: Contest for the Female >>
Week's Crane Resources >>
the group of four that left Chass, Eva got to their Illinois
location April 1. She found that this crane had separated
crane? Use the band
colors to identify.
Still in Florida!
and Track >>
up and catching their first thermal, juveniles
805, 812, 813, 826, 828, 829 and 830 left St. Marks together on March
30! Trackers got a PTT reading
from #813 in Alabama on March 31. Is the whole group still together?
think so, and are racing to catch up with them to see. Still
at the Chass release site in Florida are three juveniles: #803, 824,
Bev (with a bad cold) describe the magnificent departure of
Marks 7" on
their first journey north. >>
Audio clip thanks to interviewer Mark Chenoweth
and Photos from
Signals From the Sky: About Those PTTs >>
Video by Joel Jorgenson
of first family to leave Texas, on their March 28 migration stopover!
Sara Zimorski, ICF
Martha Tacha (USFWS) reports
two sightings of cranes that have begun migration.
Tom Stehn's census flight
in Texas is set for next week. What is the latest news? >>
Finish Line >>
Whooping cranes from the Eastern flock are back in Wisconsin! Their
migration is way ahead of the larger Western Flock. (It's
still too cold to arrive in
shares the latest news on the Chass juveniles and the Wisconsin
especially exciting return is crane #727. (Why? Find out here: >> )
of Days on the Wintering Grounds
and Compare: Days
Spent on Wintering Grounds 2001-2009 >>
of the "Chass 7" began migration March 24. The St. Marks
7 all departed together March 30.
many days did the four departed cranes spend on the wintering grounds
at Chassahowitzka NWR? (They arrived Jan.
- How many
days did the "St. Marks 7" spend on the wintering grounds at St.
Marks NWR? (They arrived Jan.
- In the
flock's 8-year history, how do these two
wintering times compare with other first cranes to depart
on spring migration? See
Chart >> and answer the questions at the bottom
of the chart.
responses in your Journal. >>
Endangered Species Math: How Many Left?
over the last remaining
wild migratory flock of Whooping cranes
in Texas, Tom Stehn has told us that 2008-2009 was the
worst winter on record in terms of bird deaths for this flock. He estimates
21 cranes died at Aransas NWR this winter. The combination of
mortality at Aransas and the losses during spring, summer and fall
resulted in approximately
21 percent of the Central Flyway flock being lost in the last 12 months.
- If 270 arrived, how many might we expect
in this flock have dropped _____ times since the all-time low of _____
birds. (See graph.)
for the Female
tried to dance with W601 (the
new flock's first and only wild-born bird) in
spring 2008. They hung out together for a while.
Photo Sara Zimorski
soon she had another boyfriend: #310.
Richard Urbanek, ICF
April W601 (with #310) made her first nest! She was still too
young to lay eggs, but it was good practice. #310 was still
migrated home in March.
next? In the meantime, male #307 is
also back on Necedah NWR. Sara Zimorski told us, "Apparently
#307 has been trying (and may have succeeded) to steal W601 away from
#310. Last year #307 and
were hanging out together before #310 came along so we'll see what
unofficial mate last summer. She migrated with him last fall, but
she was found dead in Putnam County, Florida on January 3, 2009.) What
do you think will happen next?
Week's Crane Resources
Clip: Bev Describes the Chass 7's Spring Departure >>
Clip: Whooper Family at Migration Stopover >> (Joel
Jorgensen, Nongame Bird Program Manager at NE Game and Parks Commission)
- Lesson: Signals
From the Sky: About Those PTTs >>
Number of Days on the Wintering Grounds >>
- Graph >>
Using Band Colors: Quick Color Codes for the Class of
and Record Keeping: Track the Migration >>
Student Craniacs: Classrooms in Action >>
Next Whooping Crane Migration Update Will Be Posted on
April 10, 2009.