Always make sure that the cheek pouches are empty before scruffing.
They are less likely to bite and they don't have the ability to turn around in their skin like a hamster because the skin is tighter and without the excess of cheek pouches.
We also recorded whether the squirrel was carrying material, as indicated by enlarged cheek pouches.
From 2000 to 2002, in 4.4% of captures of adult males (n = 471) and 0.6% of captures of adult females (n = 1032), the individuals had material in their cheek pouches. Of 170 juvenile males caught 338 times, only one individual had full cheek pouches.
Males and females also carried different material in their cheek pouches (Pearson's [chi square] = 11.4, p = 0.01, df = 3).
Other genera commonly found in the cheek pouches of males were Luzula, Carex, Ranunculus, Potentilla, Cerastium, Draba, Cardamine, and Eutrema.
Thus, the timing of males carrying material in their cheek pouches in our study is consistent with their results (McLean and Towns, 1981).
Our trapping was not extensive enough to determine whether all males cached, but almost all adult males were seen with full cheek pouches at least once during late summer (E.
When a chipmunk encountered a bait station, it typically ate one or two seeds and then filled its cheek pouches and carried a load of seeds away.
If I captured a chipmunk, I checked its cheek pouches for traces of radioactivity (to confirm that it was the chipmunk I had been observing), weighted it, and determined its sex and age.
In both cases, I found a single seed of one load cached with numerous seeds of the next load, suggesting that this chipmunk had twice returned to the bait station with one seed in its cheek pouches. There was considerable variation among individuals in number of seeds carried per load, number of caches per load, and number of seeds per cache (Table 1).