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Phenology Report: Why is that Blue Jay bald?

A bald Blue Jay perches on a platform feeder. Its head is mostly skin with a few small feathers. The background is green and blurry.
Contributed
/
iNaturalist user jldm
A Blue Jay in the middle of molting its head feathers perches on a platform feeder in Minneapolis on August 16, 2021.

KAXE Staff Phenologist John Latimer provides his weekly assessment of nature in Northern Minnesota. This is the week of Aug. 20, 2024.

In this week’s phenology report, John teaches us about chicken-of-the-woods fungi, plant personalities and why Blue Jays go bald in August*. Enjoy!

Topics

  • Introduction (0:00-0:26) 
  • Asters (0:26-0:47, 6:18-9:44) 
  • Chicken-of-the-woods and oak trees (0:47-4:17) 
  • Fishing spider (4:17-6:18) 
  • Spotted touch-me-nots, aka jewelweeds (9:44-11:11) 
  • Plant personalities and fall colors (11:11-12:44, 14:17-14:33) 
  • Speckled alder “cones” and galls (12:44-14:17) 
  • Bird migrations (14:33-15:03) 
  • Bird behaviors and molting (15:03-16:18) 
  • Black bears and wood ticks (16:18-17:10) 
  • Conclusion (17:10-17:51) 
  • Downy rattlesnake plantain addendum (17:51-18:57) 

*Blue Jays molt their head feathers in late summer and early fall. Enjoy this gallery of janky-looking jays:


That does it for this week! For more phenology, subscribe to our Season Watch Newsletter or visit the Season Watch Facebook page.

Funding for this project was provided by the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (LCCMR).

Stay Connected
Charlie Mitchell (she/they) joined KAXE in February of 2022. Charlie creates the Season Watch Newsletter, produces the Phenology Talkbacks show, coordinates the Phenology in the Classroom program, and writes nature-related stories for KAXE's website. Essentailly, Charlie is John Latimer's faithful sidekick and makes sure all of KAXE's nature/phenology programs find a second life online and in podcast form.<br/><br/><br/>With a background in ecology and evolutionary biology, Charlie enjoys learning a little bit about everything, whether it's plants, mushrooms, or the star-nosed mole. (Fun fact: Moles store fat in their tails, so they don't outgrow their tunnels every time conditions are good.)