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The fat and weight cycle in Wisconsin juncos
(1970-04-01)
Our study was aimed at answering three specific questions. First, do wild Juncos in Wisconsin exhibit spring premigratory fat deposition. Second, it has been reported that during the winter, fat deposits and body weights ...
Breeding birds of the forested portions of Cedarburg Bog
(1973-10-01)
In 1971 the Wisconsin Scientific Areas Preservation Council inaugurated a program of annual breeding bird surveys in the various state scientific areas, carried out by members of the Wisconsin Society for Ornithology and ...
Long-term population fluctuations of small mammals at the UWM Field Station
(1988-04-01)
Population sizes of four small mammals, Peromyscus leucopus, Microtus pennsylvanicus, Blarina brevicauda, and Sorex cinereus, were monitored for over twenty years at the UWM Field Station. P. leucopus had moderate fluctuations ...
An assessment of age determination methods for captured passerine birds
(1996-04-01)
Various methods of determining age of passerine birds, using eye color, shape of flight feathers, plumage color patterns, etc. are presented in handbooks for bird banders, such as Pyle, et al., Identification Guide to North ...
Wintering populations of juncos at the UWM Field Station
(1985-04-01)
Since 1966 the winter populations of Dark-eyed Juncos, Junco hyemalis at the UWM Field Station have been monitored by mark-recapture methods. Schnabel estimates with 95% confidence intervals are presented for each winter. ...
In Quest of the Elusive Ovenbird
(1968-10-01)
The Ovenbird was selected for intensive study at the UWM Field Station for a variety of reasons. First, it is closely adapted in all respects-morphological, physiological, behavioral- to the upland forest environment, ...
The effects of an altered photoperiod upon the migratory orientation in the White-throated Sparrow (Zonoirichia albicollis)
(1977-04-01)
A variety of cues are available that a nocturnal migratory bird might use to orient during its journey. Perhaps the best established is their use of the information available in the celestial sky. But how much information ...
Dispersal movements of juvenile Black-capped Chickadees
(1974-04-01)
To learn more about Chickadee dispersal this study was undertaken from the summer of 1970 through the summer of 1973, involving the color-banded population of Black-capped Chickadees at the UW-M Cedar-Sauk Field Station ...
Population Dynamics of the Black-capped Chickadee
(1971-04-01)
The Black-capped Chickadee is an abundant, familiar bird in Wisconsin, known to almost everyone. In summer it is widespread in nearly all kinds of woods, although it is more numerous in younger second-growth forests, swamp ...
Long-term population trends in songbirds: Evidence from a general netting program
(1988-04-01)
A one-day-a-week general bird-netting operation has been conducted each autumn since 1965 at the UWM Field Station. Overall results for 23 years are presented, on a species by species basis. The 101 species captured were ...