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Why do migratory birds fly in a V-formation?
Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. Third, bouts of leading and following occur close in time. Kneeling on the bed, the man penetrates her while her legs lay open on his chest. The reality is that women generally need at least ten to twenty minutes of direct and careful clitoral stimulation before they reach a clitoral orgasm. G Spot Sex Positions 8. Summing up relative positions of the birds over the whole flight, we find a blurred V-shaped formation Fig. Mp4 lesbian porn , Porno sex slave.
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Sustained observation from the ground of flocks covering great distances in the air is very difficult. Additional assumptions about group coordination, communication, or other mechanisms to increase group adhesion are not required. This finding and the high correlation on the individual level between leading a formation and flying in the wake of another bird are in line with the notion that the birds actively seek positions in the wake of other birds and that they take turns in leading. As body mass is a good indicator for social dominance and energy reserves within sex and age class , we would expect that heavier birds will be more often in the favorable position. Notify me of follow-up comments by email.
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