Will we ever see swallows in such numbers as this again?
I doubt it. These pictures were taken back in the 60's with my Agiflex 111 camera probably on 50 ASA Adox film.
Using Beutler's developer it gave an extra fine grain negative.
I can still remember Mrs Long pointing them out to me.
Their chattetring was quite loud and I expect they were gathering for their flight back to Africa.