Video feed captures ospreys nesting on campus after long-distance migration
by
Bob Sheehy, Ph.D.
March 28, 2024
In early March, ospreys returned to °ÄÃÅÀÏÆæÈËÂÛ̳, continuing a tradition of
nesting on our main campus this time of year. Clyde Kessler, a local ornithologist,
first observed the nest in May 2019. It has been active every year since. In anticipation
of the birds’ return migration, a camera was installed on the nest through a collaborative
effort involving the Departments of Biology and Geology, University Advancement, Facilities
Management, Information Technology Services and Marketing and Communication, and with
the support of CMG Leasing.
Osprey (Pandion haliaetus) are birds of prey that are almost exclusively fish eaters.
In higher latitudes, fish become unavailable in winter, so the birds in these areas
migrate. Our birds are likely migrating to the Caribbean or South America each winter
and returning for nesting in mid-March to early April.
Ospreys form permanent pairings and will return to use the same nest year after year.
The nesting season starts with the pair adding to the nest, which increases in size
each year, often becoming quite large. Copulations take place in the nest, and the
female will lay two to four eggs several days apart. While incubation is done primarily
by the female, the male will help with this task as well. Incubation lasts approximately
40 days. Young ospreys grow quickly and are ready to fledge about 2 ½ months after
hatching. Highlanders who tune into the video feed will be able to distinguish the
male from the female osprey based on size. The females are noticeably larger than
the males.
One of only six species of land birds with worldwide distribution, the osprey population
decreased by an estimated 90% in the 1950s and ’60s due to the widespread use of pesticides
such as DDT. Since the U.S. ban on DDT in 1972, the population of ospreys has been
slowly increasing. °ÄÃÅÀÏÆæÈËÂÛ̳ has seen the benefit of this increase and strives
to support this conservation effort as part of the River Campus initiative. The installation
of artificial nest platforms has been shown to aid in this recovery effort, and members
of the university community, in partnership with the city, are exploring the construction
of additional nesting sites along Radford's riverway.
NOTE: The safety and well-being of the ospreys are of paramount importance, so please
respect their rights to nest without human interference. We encourage members of the
Radford community to observe these birds via the video feed. Harassing nesting ospreys
violates the Federal Migratory Bird Act, and shooting drone video footage of the birds
in their nesting habitat or disturbing them in any other way is strictly prohibited.