"The good news is that more young are being raised in the nests that
are still producing". These optimistic words come from Paul Nickerson
of the United States Fish and Wildlife Service, talking about the bald
eagle in the northeastern United States. Paul, who is Staff Specialist,
Endangered Species with the USFWS, came to Nova Scotia in June to collect
four young eagles as part of the Service's program to improve the population
of the country's national bird.
Nova Scotia has a relatively high eagle population with about two young
a year produced per active nest. This compares with fewer than one per
cent in most of the states. Pesticides poisoning and related egg shell
thinning have been blamed. But sine the 1972 ban on the use of DDT and
a general cleansing of the environment of "hard pesticides", more eggs
are hatching.
This year nearly 100 young eagles were hatched in Cape Breton nests
in addition to eaglets produced in mainland nests. The biologists felt
that there were enough eagles in the province so that four young could
be sent to the US to help build up a regional population.
The eaglets were eight weeks old and almost ready to fly when biologists
climbed to the tree top nests. Four young (one each of two pairs and
two of triplets) were fitted with leg bands to identify them as Nova
Scotian and housed in separated flight cages. They were flown by chartered
aircraft directly to their "hack" site in New Jersey
. Hacking is a time proven technique of releasing birds to the wild.
The eagles are housed in cages on top of poles where they have a good
view of their new home. Their food is given in such a way that they
never see people. When they are ready to fly, the cage is left open
and they are free to go. Food will be left at the cage site if the birds
return. But gradually they learn to fend for themselves.
The USFWS reported at the end of June that the Nova Scotian birds were
settled in to the Dividing Creek hack site very well. They began eating
fish immediately on arrival and were being monitored continuously by
closed circuit television. They are on a twenty acre property overlooking
a salt marsh owned by the National Lands Trust.
If plans go well, twenty more birds will be collected this year from
Manitoba and Saskatchewan for hacking in Massachusetts and Pennsylvania.
The western provinces have eagle populations measured in the thousands,
so more birds can be taken there without harm. Also, because they are
farther north they breed later in the year. Paul Nickerson was still
collecting birds in Canada at the end of June.
In their new home the eagles should easily adapt to an earlier breeding
season. The hope is that, in time, with the help of people like Paul,
bald eagle populations will build to the point where they will be off
the endangered list.
IMAGE: Going south to help
rebuild the United States' bald eagle population. Lands and forests
technician George Ball gets an eight week old eagle ready for its shipping
crate and Paul Nickerson (left) and Clyde Bolin of the USFWS watch.