Koivula, M., and J. Viitala. 1999. Rough-legged buzzards use
vole scent marks to assess hunting areas. Journal of Avian
Biology30 : 329 –32.
Koivula, M., J. Viitala, and E. Korpimäki. 1999. Kestrels prefer
scent marks according to species and reproductive status of
voles. Ecoscience6 : 415 –20.
Koivunen, V., E. Korpimäki, and H. Hakkarainen. 1996. Differ-
ential avian predation on sex and size classes of small mam-
mals: Doomed surplus or dominant individuals? Annales
Zoologici Fennici33 : 293 –301.
———. 1998. Refuge sites of voles under owl predation risk: Pri-
ority of dominant individuals? Behavioral Ecology9 : 261– 66.
Kokko, H., and E. Ranta. 1996. Evolutionary optimality of de-
layed breeding in voles. Oikos77 : 173 –75.
Kokko, H., and R. A. Johnstone. 1999. Social queuing in animal
societies: A dynamic model of reproductive skew. Proceedings
of the Royal Society of London, Series B266 : 571–78.
Kokko, H., R. A. Johnstone, and T. H. Clutton-Brock. 2001. The
evolution of cooperative breeding through group augmenta-
tion. Proceedings of the Royal Society of London, Series B
268 : 187– 96.
Kokko, H., and P. Lundberg. 2001. Dispersal, migration, and off-
spring retention in saturated habitats. American Naturalist
157 : 188 –202.
Kollack-Walker, S., and S. W. Newman. 1995. Mating and ago-
nistic behavior produce different patterns of Fos immunola-
beling in the male Syrian hamster brain. Neuroscience66 :
721–36.
Komdeur, J., and B. J. Hatchwell. 1999. Kin recognition: Func-
tion and mechanism in avian societies. Trends in Ecology and
Evolution14 : 237– 41.
Komers, P. E., and P. N. M Brotherton. 1997. Female space use is
the best predictor of monogamy in mammals. Proceedings of
the Royal Society of London, Series B264 : 1261–70.
König, B. 1989a. Behavioural ecology of kin recognition in house
mice. Ethology Ecology and Evolution1 : 99 –110.
———. 1989b. Kin recognition and maternal care under
restricted feeding in house mice (Mus domesticus). Ethology
82 : 328 – 43.
———. 1993. Maternal investment of communally nursing
female house mice (Mus musculus domesticus). Behavioural
Processes30 : 61–74.
———. 1994a. Communal nursing in mammals. Verhandlungen
der Deutschen Zoologische Gesellschaft87 : 115 –27.
———. 1994b. Components of lifetime reproductive success in
communally and solitarily nursing house mice: A laboratory
study. Behavioral Ecology and Sociobiology34 : 275 – 83.
———. 1997. Cooperative care of young in mammals. Naturwis-
senschaften84 : 95 –104.
König, B., and H. Markl. 1987. Maternal care in house mice. I.
The weaning strategy as a means for parental manipulation
of offspring quality. Behavioral Ecology and Sociobiology
20 : 1– 9.
König, B., J. Riester, and H. Markl. 1988. Maternal care in
house mice (Mus musculus): II. The energy cost of lactation as
a function of litter size. Journal of Zoology, London216 :
195 –210.
Koolhaas, J. M., S. M. Korte, S. F. De Boer, B. J. Van Der Veg,
C. G. Van Reenen, H. Hopster, I. C. De Jong et al. 1999.
Coping styles in animals: Current status in behavior and
stress-physiology. Neuroscience and Biobehavioral Reviews
23 : 925 –35.
Koprowski, J. L. 1991. Mixed-species mating chases of fox
squirrels and gray squirrels. Canadian Field-Naturalist105 :
117–18.
———. 1992. Removal of copulatory plugs by female tree squir-
rels. Journal of Mammalogy 73 : 572 –76.
———. 1993a. Alternative reproductive tactics in male eastern
gray squirrels: “Making the best of a bad job”. Behavioral
Ecology4 : 165 –71.
———. 1993b. Behavioral tactics, dominance, and copulatory
success among male fox squirrels. Ethology Ecology and
Evolution5 : 169 –76.
———. 1993c. Do estrous female gray squirrels, Sciurus caroli-
nensis,advertise their receptivity? Canadian Field-Naturalist
106 : 392 – 94.
———. 1993d. Sex and species biases in scent marking by fox
squirrels and eastern gray squirrels. Journal of Zoology230 :
319 –23.
———. 1994a. Sciurus carolinensis. Mammalian Species
480 : 1– 9.
———. 1994b. Sciurus niger. Mammalian Species479 : 1– 9.
———. 1996. Natal philopatry, communal nesting, and kinship
in fox squirrels and eastern gray squirrels. Journal of Mam-
malogy77 : 1006 –16.
———. 1998. Conflict between the sexes: A review of social and
mating systems of the tree squirrels. In Ecology and evolu-
tionary biology of tree squirrels,ed. M. A. Steele, J. F. Mer-
ritt, and D. A. Zegers, 33 – 41. Martinsville: Virginia Museum
of Natural History.
Koprowski, J. L., J. L. Roseberry, and W D. Klimstra. 1988.
Longevity records for the fox squirrel. Journal of Mammalogy
69 : 383 – 84.
Korpimäki, E., and C. J. Krebs. 1996. Predation and population
cycles of small mammals. BioScience46 : 754 – 64.
Korpimäki, E., K. Norrdahl, and J. Valkama. 1994. Reproduc-
tive investment under fluctuating predation risk: Microtine
rodents and small mustelids. Evolutionary Ecology
8 : 357– 68.
Korpimäki, E., V. Koivunen, and H. Hakkarainen. 1996. Micro-
habitat use and behaviour of voles under weasel and raptor
predation risk: Predator facilitation? Behavioral Ecology
7 : 30 –34.
Koskela, E., T. Horne, T. Mappes, and H. Ylönen. 1995. Does
risk of mustelid predation affect oestrus cycle in the bank vole
Clethrionomys glareolus? Animal Behaviour51 : 1159 – 63.
Koskela, E., T. Mappes, and H. Ylönen. 1997. Territorial behav-
iour and reproductive success of bank vole Clethrionomys
glareolusfemales. Journal of Animal Ecology66 : 341– 49.
Koskela, E., and H. Ylönen. 1995. Suppressed breeding in the
field vole (Microtus agrestis): An adaptation to cyclically fluc-
tuating predation risk. Behavioral Ecology6 : 311–15.
Kosoy, M. L., R. L. Regnery, T. Tzianabos, E. L. Marsont,
D. C. Jones, D. Green, G. O. Maupin, J. A. Olson, and
J. E. Childs. 1997. Distribution, diversity, and host specificity
of Bartonellain rodents from the southeastern United States.
American Journal of Tropical Medicine and Hygiene57 :
578 – 88.
Kotler, B. P. 1984. Predation risk and the structure of desert
rodent communities. Ecology65 : 689 –701.
Kotler, B. P. 1985. Owl predation on desert rodents that differ
in morphology and behavior. Journal of Mammalogy
66 : 824 –28.
Kotler, B. P. 1997. Patch use by gerbils in a risky environment:
Manipulating food and safety to test four models. Oikos
78 : 274 – 82.References 543