• Field notes:

• Total spp observed - Allenspark 16, Wild Basin 2 (16 in total)
  
• Allenspark - Fawn Brook Inn & in neighborhoods
  

• Highlights: 
• Allenspark
• Evening Grosbeak n=130
• Brown-capped Rosy-Finch n= 3
• Red Crossbill n=13
  
• Townsend's Solitaire n=1 (2 in Wild Basin)
• Wild Turkey n=25

• What evidence did you see of keystone species in Wild Basin (hint: see photo under 2019 to the right)
• Refer to 2019's 'Bird Adaptions for Winter' whiteboard summary (in the right panel under 2019 results)

• How is resident vs. migratory behavior linked to food preferences and seasonal diet switching?
• That is, what are the general patterns in food preferences of birds that are year-round residents or facultative elevational migrants vs. those that are obligatory latitudinal migrants?
• Note the distinction between preference for insects that are aerial (excuse the misspelling) vs aquatic, arboreal (tree-living), and soil-living
• What is diet switching?
  
• What is the story about the Dusty Grouse - As a reverse elevational migrant, where does it go in winter vs. summer what does it do for food in those locations?

• Field: Class Bird List, through 2019 (pdf, 80k; xlsx, 40k)

• Field notes:

• Total spp observed - Allenspark 14, Wild Basin 6 (16 in total)
  
• Allenspark - Fawn Brook Inn & in neighborhoods
  
• Highlights: 
• Allenspark
• Pine Grosbeak - new sighting for course
• Mixed species flock of Dark-eyed Juncos, including Oregon race with other races unidentified
  
• Golden Eagle in Wild Basin

• What evidence did you see of keystone species in Wild Basin (hint: see photo to the right)
• Refer to 'Bird Adaptions for Winter' whiteboard summary (in the right panel)
  

• Lab: Colorado Front Range Birds: Winter Resident/Migrant vs. Food Preferences Table -

• How is resident vs. migratory behavior linked to food preferences and seasonal diet switching?
• That is, what are the general patterns in food preferences of birds that are year-round residents or facultative elevational migrants vs. those that are obligatory latitudinal migrants?
• Note the distinction between preference for insects that are aerial (excuse the misspelling) vs aquatic, arboreal (tree-living), and soil-living
• What is diet switching?
  
• What is the story about the Dusty Grouse - As a reverse elevational migrant, where does it go in winter vs. summer what does it do for food in those locations?

• Field: Class Bird List, through 2018 (xlsx, 80k) 

• Field notes:

• Total spp observed - Allenspark 8, Wild Basin 2
• Ferncliff Inn feeders not out in Allenspark.  Observations also in neighborhoods nearby.
  
• Strong winds both sites
• Highlights: 
• At Allenspark -
• Evening Grosbeaks, in a flock
  
• Clark's Nutcracker, at a suet feeder
• American Turkey, group of ~25
  

• Lab: Colorado Front Range Birds: Winter Resident/Migrant vs. Food Preferences Table -

* Seasonal diet switchers (only some are indicated)

Two broad categories -

• Winter Residents & Facultative Altitudinal Migrants (upper left, upper center, & center)
  
• Seasonal Obligatory Latitudinal Migrants (lower right)
  

As well as a few Obligatory Altitudinal Migrants - and a Reverse Altitudinal Migrant - (upper center)

• Discussion -
• What mainly distinguishes the Food Preferences of these 2 groups? 
  
• How is this linked to their Resident vs. Migratory behavior?
• Note that within each group, there are multiple food-source solutions.
• In the photo of nesting cavities in a snag (see right panel), what is the functional relationship between the size of the cavity and the bird that created the cavity and other birds that depend on them?
  

• Field: Class Bird List, through 2017 (xlsx, 80k) 

• Field Highlights:

• Total spp observed - Allenspark 16, Wild Basin 12 (both sites tied with an earlier year for most species observed -- 2013 for Allenspark, 2015 for Wild Basin)
• At Wild Basin -
• American Dipper!

• Lab: Colorado Front Range Birds: Winter Resident/Migrant vs. Food Preferences Table -

• Field: Class Bird List, through 2016 (xls, 80k)

• Field Highlights:

• Total spp observed - Allenspark 12, Wild Basin 9

• At Wild Basin -
  
• 2nd year Golden Eagle
• Tree snags with different sized and shaped (round, oval) nesting cavity entrances for:
• Downy Woodpecker - small, round
• Hairy Woodpecker - large, round
• Northern Flicker - large, oval (see photo to right)

• Lab: Colorado Front Range Birds: Winter Resident/Migrant vs. Food Preferences Table -

• Field: Class Bird List 2005-2015  (xls, 80k)

• Field Highlights:
• At Allenspark-
  
• Red Crossbill flock (adult feeding juvenile)
• Cassin's Finch (new species for class list).
  
• Total spp observed - Allenspark 15, Wild Basin 11
  

• Lab: Winter Resident/Migrant vs. Food Preferences Table (pdf, 2.4M) --

• Field: Class Bird List 2005-2014 (xls, 80k)
• Field Highlights:
• Allenspark - mixed species flock of Brown-capped Rosy Finch (couple 100), Black Rosy Finch, and Evening Grosbeak.  Photos below.
  
• Wild Basin (RMNP), Engelmann Spruce riparian area - Golden-Crowned Kinglet (2-3 pairs feeding in Spruce and on insects on surface of snow).  Photos to right
  

Mixed species flock: Brown-capped Rosy Finch, Black Rosy Finch, Evening Grosbeak.  Allenspark

Evening Grosbeak (female, top center; male lower left).  Allenspark

• Field: Class Bird List 2005-2013 (pdf, 70k)

Sapsucker sap wells, Ponderosa Pine -- Wild Basin, RMNP

White-Breasted Nuthatch -- as part of a mixed species flock (nuthatches and chickadees) brought in by Ted's Pygmy Owl calls -- Allenspark

• Field: Class Bird List 2005-2012 (pdf, 16k)
  
• Lab: Winter Resident/Migrant vs. Food Preferences Table (pdf, 200k)

Red-winged Blackbird - Female Allenspark

Pine Siskin Allenspark

Hairy Woodpecker - Male Allenspark

Photos (c) 2012 T Kittel

• Field: Class Bird List 2005-2011 (pdf, 16k)
• Lab: Winter Resident/Migrant vs. Food Preferences Table (pdf, 2.4M)

• Lab Table exercise (pdf, 1.5M)
• photos: Ponderosa with cavity, with Sapsucker bores (jpg's, ~200k)

• Lab Table exercise (pdf, 150k; B&W handout version pdf, 800k)
• Blackboard photos (Left, Right: jpg, 100k) - photos c/o Ken Anderson

• Bird field observations for Allenspark & Wild Basin - Blackboard image (jpg, 1.8M, c/o David Rosengarten)