They just keep on keepin’ on!
Any season of the year, the Mountain Chickadee is a delight to encounter. In their breeding season, they form neighborhoods of adjacent territories in the conifer forests of western Canada and the U.S., which ring in the early spring dawn with dozens of cheerful whistled songs. In winter, groups of Mountain Chickadees are joined by other birds — nuthatches, woodpeckers, creepers, kinglets — to form large dispersed flocks that move together through the forest, following the chickadees’ namesake rallying call.
Mountain Chickadees are social birds, living in groups of up to three mated pairs and juveniles of the last breeding cycle for most of the year, only breaking off into territorial pairs for the breeding season. In fact, while we tend to think of the breeding season as the time when mates are chosen and territories are established, most of this actually occurs in the winter. This is when the social hierarchy is solidified between the individuals in a group, and come spring, the dominant birds will reliably take the best territories. While boundaries may shift somewhat, the same birds will usually hold the same territories year after year. Pair bonds are formed during the winter as well, and usually last for as long as both birds survive.
Mountain Chickadees are well-known for their caching behavior. To survive harsh mountain winters, these chickadees hide surplus food throughout their winter territories, a behavior known as “scatter hoarding.” A single chickadee may cache tens of thousands of food items — insects, conifer seeds, or goodies from bird feeders — over the course of a year. They may cache food any time they have extra, and may recover caches any time of the year, but spend the most time caching in the fall, and the most time eating from them in the winter. In fact, studies have shown that Mountain Chickadees living in harsher winter environments have better spatial memory and are more adept at remembering where they have cached food. Unsurprisingly, these birds also survive longer. (snip-MORE)
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More than most, the Black-billed Magpie is a bird that inspires strong emotions in humans. A familiar species across much of the West, the Black-billed Magpie is intelligent, adaptable, and bold. For these attributes, they are both admired and loathed. While considered an annoyance or an inconvenience by some, they are also highly social and will occasionally leave “gifts” for humans who feed them.
Like many other intelligent and opportunistic corvids, magpies will take advantage of whatever resources they can. As such, the Black-billed Magpie is probably best known as a scavenger of garbage, carrion, and poorly guarded picnics. This has given these birds a bad reputation, with many regarding them as pests. A common folk belief is that magpies will wound cows to eat their flesh or drink their blood. Magpies will, in fact, stand on the backs of cows to probe and peck. However, the goal is typically not to eat the cow itself, but the parasites on the cow, such as ticks, that are doing just that. Cows are not the only beneficiaries of this behavior — magpies will eat ticks off of other large mammals, including bison, moose, elk, and deer.
The Black-billed Magpie holds a special place in mythology as well. Magpies are recognized as messengers in numerous Indigenous cultures of North America, sometimes to the aid of humans, sometimes to carry news to the Creator. One widespread story tells of how the magpie, for helping humans and birds alike, was given the honor of “wearing the rainbow” — a reference to the iridescent sheen on this bird’s wings and tail. (snip-MORE)
Scottie's Playtime 
