Can you spot them?

Not quite the 15th of May yet - as in the poem by Ted Hughes, but at the end of a hot day - perhaps the hottest of the year - after watching Giro, and football and reading I popped outside in the evening and heard and saw the first swifts of summer.

Ted Hughes poem is shown below:

Swifts
Fifteenth of May. Cherry blossom. The swifts
Materialize at the tip of a long scream
Of needle. ‘Look! They’re back! Look!’ And they’re gone
On a steep
Controlled scream of skid
Round the house-end and away under the cherries. Gone.
Suddenly flickering in sky summit, three or four together,
Gnat-whisp frail, and hover-searching, and listening
For air-chills – are they too early? With a bowing
Power-thrust to left, then to right, then a flicker they
Tilt into a slide, a tremble for balance,
Then a lashing down disappearance
Behind elms.
They’ve made it again,
Which means the globe’s still working, the Creation’s
Still waking refreshed, our summer’s
Still all to come —
And here they are, here they are again
Erupting across yard stones
Shrapnel-scatter terror. Frog-gapers,
Speedway goggles, international mobsters —
A bolas of three or four wire screams
Jockeying across each other
On their switchback wheel of death.
They swat past, hard-fletched
Veer on the hard air, toss up over the roof,
And are gone again. Their mole-dark labouring,
Their lunatic limber scramming frenzy
And their whirling blades
Sparkle out into blue —
Not ours any more.
Rats ransacked their nests so now they shun us.
Round luckier houses now
They crowd their evening dirt-track meetings,
Racing their discords, screaming as if speed-burned,
Head-height, clipping the doorway
With their leaden velocity and their butterfly lightness,
Their too much power, their arrow-thwack into the eaves.
Every year a first-fling, nearly flying
Misfit flopped in our yard,
Groggily somersaulting to get airborne.
He bat-crawled on his tiny useless feet, tangling his flails
Like a broken toy, and shrieking thinly
Till I tossed him up — then suddenly he flowed away under
His bowed shoulders of enormous swimming power,
Slid away along levels wobbling
On the fine wire they have reduced life to,
And crashed among the raspberries.
Then followed fiery hospital hours
In a kitchen. The moustached goblin savage
Nested in a scarf. The bright blank
Blind, like an angel, to my meat-crumbs and flies.
Then eyelids resting. Wasted clingers curled.
The inevitable balsa death.
Finally burial
For the husk
Of my little Apollo —
The charred scream
Folded in its huge power.