A graph showing peak migration times in south central PA

kristin_williams(6)March 12, 2007

I posted this link last year, and thought it might be worth doing again. If you scroll down the page, the second graph shows peak migration times for different spring migrants. The second bird down below the Black-billed Cuckoo is the Ruby-throated Hummingbird. The graph is based on many years of banding data at Powdermill--a bird banding station in the mountains of southwestern Pennsylvania. The return times are a little later there (in the mountains) than for central Ohio and the Pittsburgh area.

It really shows well how long and drawn out the migration of ruby-throats is. Although the first birds may appear in the Powdermill area in early May, they don't peak until about two weeks later.

Take a look!

Here is a link that might be useful: Graph of peak migration times in the mountains of western PA

Thank you for reporting this comment. Undo
penny1947(z6 WNY)

That is just about right Kristin since the males arrive about 2 weeks before the females.


    Bookmark   March 12, 2007 at 9:45PM
Sign Up to comment
More Discussions
Material for hummingbird nest
I saw this product/video online and I'm wondering what...
Anna's HBs now visiting
I have Allen's hummingbirds all year, and in the summer...
Squirrel problems
I have several resident squirrels who seem to be attracted...
So sad - Found one of my Hummers dead
Well, actually I didn't find him. My husband did. I...
What early annuals should I get?
What are early blooming annuals hummingbirds like?...
© 2015 Houzz Inc. Houzz® The new way to design your home™