CLEARING HOUSE, Cont'd.
Dickcissel: (3)3,8,(2)4,7,(1)7 days, Cove, AKM,
Sparrow, Seasides (2)17, Cove, AKM,
FLICKER, YELLOW-SHAFTED: (1)13, Baytown, NB,
CONTRIBUTORS TO THE CLEARING HOUSE
AKM Arlie K. McKay
DHH Dan H. Hardy
NP Noel Pettingell
SW Steve Williams
D&DL David and Dorothy Lefkovits
NB Nettie Busby
ADDITION TO THE JUNE CLEARING HOUSE
GREBE, EARED: (1)20, Ruddy Duck Pond (E. of Sweetwater Lake), Harvey Patton
CLEARING HOUSE NOTES:
Steve Williams reported that he has seen the White-Tailed Kite all summer.
Mr. McKay writes: "Within my memory the Snow and Blue Geese began to fail to segregate in
spring migration. They are hybridizing. Some say they are on species as a result of
integration in their nesting areas. An amateur can distinguish them upward of a mile away.
Some are able to seperate them in the dark by plucking their breasts, or by color of the
skin when all feathers are removed, or by the taste of the cooked birds. Things that
differ are not equal,"
PERSPECTIVE OH DOOMSDAY
Through the kindness of Mr. Russell Clapper the editors received a copy of the speech
presented liy-HHOlm S. Gottschalk, Director, Bureau of Sport Fisheries and Wildlife, U.S.
Department of the Interior, at the 11th Annual Meeting of the Fontana Conservation Roundup,
Fontana Dam, N,C, May 15, 1970, The following are quotes from this speech:
"Environmental problems that we recognize today point directly to questions of human survival. No thinking person can set aside the fact that modern-day conservation must ignore
the parts in favor of the whole. It is global conservation—there is no other way—not so
long as pollutants originating in our east coast mosquito marshes are recovered in the
penquins of the Antartic—and the smoke pall over Pittsburgh today cloicta tie skies of
other cities on other days.
We people in the wildlife conservation business like to think that the public in finally,
talking about things that we have been talking about for years. I remember the early
work of Dr, Cottam and Dr, Linduska on the effect of DDT spraying in forests in the«>ffi?^2S*f'_'-
vicinity of the Patuxent Wildlife Research Center 25 years ago. Since then we have been
able to document the effect of DDT and may other kinds of.pesticide pollutants on fish and
wildlife, and only last year succeeded in tracking down the complicated physiological
chains which lead to the failure of reproduction in some wild birds.
This aspect of environmental damage is reasonably well documented. Most everyone knows
now about the decline of the bald eagle and the precipitous decrease in numbers of the peregrine falcon. And we have all heard about the lady who refused to breast feed.her infant
when she learned that the DDT content in mother's milk was higher than the minlm-m tolerances allowed by the Food and Drug Administration for cow's milk. We know about the
prospective doom of the brown pelican: its disappearance on the western gulf coast and
its near-complete failure to produce hatchable eggs in California last year. Only 5
young hatched from over 1,200 nests, and eggshell thickness was only 50 percent of normal.
We know from work on other species that DDT and other chlorinated hydrocarbons can interfere with calcium metabolism in ways to prevent normal eggshell formation. This appears
to be a valid explanation of the breeding failure of Brown pelicans on Anacapa Island,
A few weeks ago on Sapelo Island in Georgia, I was shocked to learn that all the Spanish
moss on the oak trees on that island is dead. More alarming is the report that it is
either dead or dying throughout most of its range. Back in Washington a few days later,