Myadestes townsendii Wintering in Montana

Pitfall Trapping of Microtus townsendii

-A field population of Microtus townsendii was trapped concurrently with live-traps and pitfall traps throughout the spring and summer of 1975. The population was at peak densities, with a maximum of 519 voles per acre. The number enumerated by pitfalls was up to two times larger than the number enumerated by live-traps. Capture of a large number of young in pitfalls indicated that mortality wa...

Aspergillosis in wintering mallards.

Fates of disappearing individuals in fluctuating populations of Microtus townsendii

HILBORN, R., and C. J. KREBS. 1976. Fates of disappearing individuals in fluctuating populations of Microtus townsendii. Can. J . Zool. 54: 1507-1518. Fates of disappearing individuals were determined for two natural populations of Microtus townsendii by livetrapping of evacuated areas and marginal habitat, and by marking individuals with radioactive tags to locate carcasses. Two hundred and ni...

Deadly radon in montana?

Noting a negative correlation between average radon levels and lung cancer mortality in Montana counties, Hart (2011) “questions the notion that radon is deadly in Montana.” Results from a much larger ecological study of the correlation between county radon levels and lung cancer mortality across the whole United States were published in the 1990s (Cohen 1990, 1995). Like Hart, Cohen found an i...

Deadly radon in montana?