Flying in formation has aerodynamic benefits. Air displaced by the downbeat of the bird in front\u2019s wings creates an upwash of air for the trailing individual to ride on, reducing drag and helping them conserve energy. The lift generated by the lead goose fractionally increases for each further back in line, with those bringing up the rear gaining the greatest advantage. However, brents are our smallest goose species, so they may not benefit from the same proportional energy savings as larger waterfowl, which expend more energy in flight.<\/p>\n
The classic V-shape also makes it easier to maintain visual contact \u2013 a key reason why military aircraft adopt this formation during operations and airshows. But brents are noisy, constantly calling to one another to communicate their position and changes in direction, altitude, speed or leadership. They also form strong familial bonds, juveniles remaining with their parents and siblings throughout their first winter, and this familiarity may enhance their ability to fly together as a cohesive unit without employing such a formal flock configuration.<\/p>\n
Nevertheless, a family party of two adults and their three offspring approaching from the west \u2013 prime peregrine territory \u2013 have adopted a boomerang formation. Whether fighter pilots or geese, it\u2019s undeniably advantageous if all eyes can see forward in potentially hostile airspace.<\/p>\n