All very confusing

This morning was a bit confusing, to me at any rate! A linnet was building a nest in a gorse bush, a meadow pipit was parachuting in a display flight from a considerable height, a whimbrel was feeding on the shingle spit and a stream of swifts were flying home westwards along the beach. Is it spring, summer or autumn? Certainly, things are on the 'change' and I am looking forward to the late summer/autumn migration....but isn't a bit late for that linnet to be building a nest now?