About 80 homes in a wealthy Calgary suburb are once again facing sporadic mail delivery due to the antics of an aggressive, brooding hawk. For three years, the predatory avian has made her nest in Lake Bonavista. And once the chicks hatch, mama hawk has taken a particular dislike to Canada Post mail carriers. The problem typically resolves itself when the baby birds leave the nest and the hawks migrate to Argentina. Until then, however, letter carriers are making the daily delivery with caution. The Post’s Jen Gerson spoke to Canada Post employee Rick Tobin about braving the slightly too wild suburbs of Calgary’s northwest.