T H I S PAPER sets out observations of birds seen from aircraft (see Table I), subsequent to those published in my previous paper (antea, vol. xlviii, pp. 59-70). AH observations are based on the same limitations and criteria of identification, height and so forth, as there outlined. Except where discussed below, these factors are not reiterated. In the two years covered by this report (October 1954 to October 1956), a total of 65 observations were m a d e ; a total almost exactly equal to that of all prevous years. The observations are of 17 species positively identified (of which eight are recorded for the first time); and, in addition, a further one of a species of crow, one of a finch or bunting, and one of an unidentified bird. Almost exactly 50% of the observations concern two species, Herring Gull* and Swift. A further fifteen observations relate to two days in late March. These two species and two " r e c o r d " days are discussed separately. All observations have, as previously, been made from a Douglas DC 3 aircraft, which has a normal cruising speed of 160 m.p.h., and climbing and approach speeds of around 130 m.p.h. (though descent speeds from cruising height may initially be 20 to 30 m.p.h. above cruising speed). Rates of climb and descent are generally maintained close to 500 feet per minute. These--by modern standards--modest speeds have been of far greater value in making observations than the associated