The 'Marsh Hawk' problem

01 September 1983
Comments Main paper A 'ringtail' harrier at Cley, Norfolk, from October 1957 to April 1958 was identified as a first-year Hen Harrier Circus cyaneus of the Nearctic subspecies hudsonius (previously known as Marsh Hawk in North America, but now called Northern Harrier) bec...
Read More

Stay at the forefront of British birding by taking out a subscription to British Birds.

Subscribe Now