The
News!
Every year, Lanny Chambers collects reports of ruby-throated hummingbirds
from all over America. He generously shares his data with Journey
North.
So
there's one hummingbird's arrival we especially like to know about
each spring: the first one Lanny gets to see in his Missouri home.
The good news: It just arrived!
Scientists
learn a lot from records kept by citizen observers over many years.
Now
you be the scientist and see what you can learn.
|
|
Lanny
Chambers, Journey North's Ruby-throated Hummingbird Expert
and creator of Hummingbirds.net |
|
Try
This
1. Find where Lanny lives:
Lanny lives in Fenton, Missouri (near St. Louis).
The latitude of Fenton is 38.513 N. The longitude is -90.435 W. Can
you find it on a map?
2. Dig into his hummers' arrival dates:
The table
to the right shows when they've appeared in the last 15 years.
- In
what year did Lanny's all-time earliest hummingbird arrive? His
latest?
- What
is the range of dates for hummer arrivals? (The number of days
between the earliest and latest arrival.)
3.
Use your Hummingbird
Journal to answer these questions:
- List 2 things you notice about the arrival dates.
- What
factors might affect when Lanny's hummingbirds arrive?
|
Lanny's
First Ruby-throated Hummingbird |
Year
|
Date
|
2008 |
April
20 |
2007 |
April
20 |
2006 |
April
16 |
2005 |
April
17 |
2004 |
April
20 |
2003
|
April
23 |
2002
|
April
17 |
2001
|
April
19 |
2000
|
April
16 |
1999
|
April
19 |
1998
|
April
16 |
1997
|
April
19 |
1996
|
April
20 |
1995
|
April
20 |
1994
|
April
22 |
|
|