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Robin Migration Update: April 8, 2014
Please Report
Your Sightings!

The robin chorus is spreading and the rush for robin real estate is on. Find out if your neighborhood has what robins seek in a territory.

Report Includes:

Image of the Week
Robins skirmishing after returning in spring

Skirmish!

Photo: Andy Wilson
News: Moving North!

Despite a long winter that slowed spring arrivals, robins are making progress toward breeding grounds. One-third of this week's FIRST reports are from six provinces in Canada, and three NOPs reported first robins. Wisconsin reported the most FIRSTS and WAVES, while Pennsylvania reported the most SONG. It's been a long wait for northerners:

  • "Blizzard on Friday, Robin singing on Monday."
    Hinckley, MN (April 7)
  • "At last! One robin giving call notes but no full song." Juneau, AK (April 6)
  • "FINALLY! We have been waiting so long for our beloved robins to return." Winnipeg, MB (April 4)

Arrivals are Rivals
The first ones to return and set up territory boundaries are often the robins who were in the same spot the summer before. Other robins that migrate through get chased off by the male and female who have the territory. During fine weather, male robins spend their time singing, feeding, and investigating their territories. As hormones increase, robins get uncomfortable being close together, and they often skirmish with other males.

Defending Territories
Robins may also fight when they arrive somewhere and want to claim a territory. When male robins return to their territories, they usually sing from various perches. Maybe they're thinking, "I think this is my territory, but if you fly over here and chase me off, then I'll know it's YOUR territory." Skirmishes usually settle the boundaries quickly, but the birds will fight harder to win a territory that has a special resource, such as a birdbath.

What to Watch For:
Where females have begun to arrive, nesting is next. Put nesting behaviors on our map by knowing what to report.


Robin picks a mulberry to eat.
Photo: Don Severson
Tipsy Treats?
 

Piebald robin in Loveland, Colorado

Photo: Diane Hoff
Awaiting Mrs. Piebald
 
Spring phenology checklist for robins
Slideshow: Will a Robin Choose Your Neighborhood?

What does a robin look for when choosing a territory in spring? See why claiming and defending a good territory is so important to a male robin:

Cover of slideshow: Will a Robin Chooe Your Backyard?
 
Maps: Report Your Sightings
Robin Migration: What to Report Robin Migration Map: First Robin Robin Migration Map: Waves of Robins
What to Report First Seen
report | map | list
Waves
report | map | list
Robin migration map: First robins heard singing Robin Nesting Behavior Earthworm migration map
Singing
report | map | list
Nesting
report | map | list
Earthworms
report |map | list
Next Update: April 15, 2014

 

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