Monday, March 4, 2013

Warbler Guy, when should I expect to begin seeing migrant-arriving Yellow-rumped Warblers?


Gus, in Wisconsin, you should expect this common wood-warbler to vary annually in its arrival time, given the vagaries of spring weather in the Midwest.

Generally, first migrants north of their winter range occur in the Upper Midwest by as early as late March, but greater pulses arrive beginning in early April and soon after. At this time (often when few if any leaves are present on deciduous trees), the Myrtle subspecies of the Yellow-rumps (Setophaga cornonata coronata) often are the most abundant songbird in forest canopies, causing warbler-seeking birders to repeatedly groan “Another Yellow-rump” as they impatiently wait for more diverse forms of Parulidae (wood-warbler family).

Peak movements of Yellow-rumps in the northern US and southern Canada occur from late April through mid-May. Like many songbird species, male Yellow-rumps migrate earlier than females, averaging 4 to 7 days sooner in their arrival upon breeding grounds.

Keep in mind that some hardy Yellow-rumped Warbler individuals remain throughout the non-breeding season in the Upper Midwest, especially during warmer winters.

As for the typically more West Coast breeding Audubon's subspecies Yellow-rumped (Setophaga cornonata auduboni), its migration dynamic shall be discussed in an upcoming article.

4 comments:

Anonymous said...

Hello, i think that i saw you visited my site so i got here to return the desire?
.I'm attempting to in finding issues to improve my web site!I suppose its ok to make use of some of your concepts!!

Feel free to visit my blog :: http://www.spokesandfolks.com

Anonymous said...

Good post however I was wondering if you could write a litte
more on this topic? I'd be very grateful if you could elaborate a little bit further. Cheers!

Here is my webpage ... personal injury attorney

Anonymous said...

Hello, I check your new stuff like every week.
Your humoristic style is witty, keep it up!

My blog post ... sushi roller mat

Anonymous said...

Have you ever thought about creating an e-book or guest authoring on other blogs?
I have a blog based on the same information you discuss and would love to have you share some stories/information.
I know my readers would enjoy your work. If you're even remotely interested, feel free to send me an e mail.

Feel free to visit my web site - Orlando Sushi