The expansion of Mountain Birdwatch, a citizen science program that monitors high-elevation songbirds in the Northeast, to include more species and more robust monitoring techniques.
3. Bicknell’s Thrush
• Endemic
• Habitat specialist
• Restricted range
• Small population
• Uncertain status
• Conservation priority
= Vulnerable
4. Past Limitations
• Count protocols vary
• Limited statistical inference
• Detectability issues
• Occupancy estimates
• Unable to estimate population size,
assess limiting factors, or
adequately model metapopulations
• Grumpy editors
5. Mountain Birdwatch II
• VISION: Create a unified program
that spans the entire breeding
range of Bicknell’s Thrush
• Organizations involved:
– Vermont Center for Ecostudies
– Bird Studies Canada
– Canadian Wildlife Service
– White Mountain National Forest
6. Addressing the Challenge
• 2006 – NECBM Mountain Bird Group
• 2007 – International Bicknell’s Thrush
Conservation Group
• 2008 – Develop protocol and SOPs
• 2009 – Begin regional coordination
• 2010 – Export model to Newfoundland
and Appalachian Mountain BCR
www.bicknellsthrush.org
7. Project Goals
1. Measure changes in distribution
and abundance with an emphasis
on SGCN.
2. Investigate the relationship
between breeding ground
population status of BITH and
winter habitat availability.
3. Produce tools and data to guide
stewardship and conservation.
9. Spatially Balanced Sampling
• GRTS Survey Design
– BITH habitat model
– Trails and roads
• Cost Surface Layer
– Effort as distance nearest road
• Flexible
– add new sites over time
– intensify sampling within pre-defined strata
10. Spatially Balanced Sampling
• GRTS Survey Design
– BITH habitat model
– Trails and roads
• Cost Surface Layer
– Effort as distance nearest road
• Flexible
– add new sites over time
– intensify sampling within pre-defined strata
11. Optimal Point Count Method
• Trained volunteers and technicians
survey once a year during 3-week
window in June
• Surveys begin 30 min before sunrise
• Target 10 focal species plus Red
Squirrel
12. Target Species
SPECIES RATIONALE
YBFL NF indicator species
BCCH Niche overlap with BOCH
BOCH NF indicator species
WIWR Abundant, easy to identify
BITH Top conservation priority, specialist
SWTH Niche overlap with BITH
HETH Niche overlap with SWTH
BLPW NF indicator species
WTSP Abundant, easy to identify, BBS decline
FOSP Priority for Canada
RESQ Main predator of BITH nests & chicks
13. 5 minutes 5 minutes 5 minutes 5 minutes
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Two Pilot Protocols
Time of
detection
in 1-min
intervals
for BITH
simultaneous with
Repeated
simple
counts for
all focal
species
Repeated
p/a for
all focal
species
OR
5 minutes 5 minutes 5 minutes 5 minutes
14. Pilot Results
• 519 points surveyed
– 437 using simple counts
– 82 using presence/absence
– 144 BITH in first 10 minutes
• Volunteer feedback
– 20 min long time
– Hard to estimate distance by sound
– Most would continue with MBW
• Team of statisticians running variance
estimates using occupancy, time-of-
detection, n-mixture models, and distance
estimation
15. Data management
• Georeferenced database
• Standardized fields aligned to AKN
• AKN archive
• Opportunity to analyze and
visualize using AKN applications
• Metadata documented through
BMDE
18. Tools for Conservation
• Public access to data and
visualizations via AKN
• Wind farm siting assessment
19. • Of highest wind
potential areas,
only 5.4% is in
BITH habitat
• Of all potential
BITH habitat, 84%
falls within the
highest wind
potential category
VT Wind Resource Map
from NREL 2007
Wind
Farm
Siting
20. Tools for Conservation
• Public access to data and
visualizations via AKN
• Wind farm siting assessment
• Range-wide analysis of preferred
habitat characteristics
21. Climate and Habitat Covariates
• Elevation
• Slope
• Aspect
• Topographical index
• Surficial geology
• Latitude/longitude
• Mean daily temperature
• Mean night-time
temperature
• Mean precipitation
• Canopy/subcanopy
characteristics
• Stem density
• Basal area by class
• Foliar calcium
• Mercury exposure
• Cone mast
• Red Squirrel
abundance
• Wind power potential
• Patch size
• Patch composition
• Isolation
22. Tools for Conservation
• Public access to data and
visualizations via AKN
• Wind farm siting assessment
• Range-wide analysis of preferred
habitat characteristics
• Assess habitat restoration in
Hispaniola
23. Winter Habitat Restoration
• Restore historical broadleaf forest in
the Dominican Republic
• Improve enforcement of protected
areas
• Correlate the extent of forest in
Hispaniola with abundance of
Bicknell’s Thrush on breeding range
25. Meeting Citizen Science
Challenges
• Generate matching
funds
• Balance quantity with quality of info
• Observer effects
• Large geographic
scope
• Sustaining interest
• Recruiting and training