Lockman, Dave C
-
1991: Wildfowl Special Issue No. 1 - SECTION TWO: POPULATION STUDIES
Demographic analyses of a Trumpteter Swan Cygnus cygnus buccinator population in Western USA
Abstract PDF -
1991: Wildfowl Special Issue No. 1 - SECTION SEVEN: MANAGEMENT AND CONSERVATION
Trumpeter Swan Cygnus buccinator range expansion programs in the northern Rocky Mountains, USA
Abstract PDF