yearling male

Adult females and yearling males are more often the killers.

Both yearling males and females can be found in bachelor herds.

The June specimen is a yearling male in moult.

This causes aggression between adults and yearling males that ultimately leads to further male migration.

Adults of both sexes behaved aggressively towards yearlings, particularly yearling males.

Yearling females travelled more frequently outside their territories than did yearling males.

A fawn stays with a doe until rutting season when dominant bucks run off yearling males.

Yearling males moved greater distances from spring emergence to the time of dispersal from the colony.

Yearling females that dispersed tended to leave at a later date than did yearling males.

Interactions involving yearling males with females and territorial males decreased as the season advanced.

Yearling males are seldom territorial; but of eight that took territories on removal sites all except one selected persistent sites.

Reduced numbers of adult males apparently resulted in lower rates of emigration by yearling males.

Although no differences were apparent before the rut, populations differed in the time budgets of females and yearling males during the rut.

There may also be mobile groups of yearling males that display for females away from traditional lek sites (Dunn and Braun 1986).

Changes in spatial patterns and behavior appear to be related to seasonal changes in levels of hormones in yearling males.

Dispersal can be viewed as an important mating strategy; for yearling males it is likely to be the only option available for reproductive success.

We test the hypothesis that the territories of yearling males are demonstrably different from and inferior for reproduction to those of adult males.

Behavioral differences related to sexual competition with other yearlings appeared to be correlated with dispersal by yearling males at Chesapeake Farms.

First birds to molt were yearling males, followed by adult males, lone (broodless) females, and brood females, in that order.

Interactions with adult males and females constituted a small portion of all interactions and yearling males were similarly subordinate to adults.

Not all males display at leks as some yearling males may display infrequently or not at all.

Survival was high and constant among lambs, yearling males, and adults of both sexes, and we were unable to detect senescence among old animals.

Yearling males and females were almost equally likely to breed, and pairings between yearlings occurred fairly frequently and did not tend to result in decreased success.

Observations of captive animals (an adult female, an adult male, and a yearling male) show that ambient conditions affect the posture of the animals.