【摘 要】
:
Background: Circus cyaneus is a medium-sized bird of prey that is widely distributed across the Northern Hemisphere. There are two currently recognized forms, t
【机 构】
:
MuseumofVertebrateZoology,OrganismsandEcosystems,Aquasis
【基金项目】
:
The costs for the Cytochrome b sequencing and sample procurement was provided by the Museum of Vertebrate Zoology,UC Berkeley.Transport costs for museum visits were met by GJE