Ecology of Broad-winged Hawk

Rosalie, June 2016

PA birdsPeruBrazilColombiaPanamaGuatemalaMexico

2016

2014-2017 paths

Rosalie’s path as of 11-14-2017

www.hawkmountain.org/birdtracker

3 PA birds wintering in Peru

Broadwing Journey

0100020003000400050006000700080009000

10000

Totalaverage

fallaverage

springaverage

adult

adult fall imm fall

Migration Distance (km)

Adult ---total = mean of 5000 milesJuvenile = 3500 miles

Migration rate/10 deg blockAdults –250 km/day(156 miles/day)JV -127 km/day

Stopovers

*Stops last 1 to 51 days*1 to 12 stops per journey*Average length 2-3 days*Habitat = 70% forested

Conserving PA’s Northern Goshawk

Identification

2006-2016 Migration Count trends

Northern Goshawk in Pennsylvania

-28%N=86, 2008

Goshawk records 2005-2009

PA Goshawk nest

Possible Threats?

Forest fragmentationLoss of hemlockWest nile virusHuman disturbanceFisher predationClimate change? How?

Pa Goshawk Project Website: www.biologicalsurvey.org

Results - preliminary

• 10 nests statewide confirmed in 2016

• 64 historic sites revisited, 4 on Kittatinny

• Several possible nest sites reported

• NONE found on Kittatinny Ridge but one subadult sighted in early season – migrant?

• More potential habitat to explore

• Turkey hunters, hikers, need to be notified more

Many Generous

Private Donors

& Indiegogo

Supporters

THANK YOU to Project Supporters and Sponsors!

Lancaster County Bird Club:

The Harold B. Morrin Scholarship