I had breakfast today watching this short film created by Salvador Dali and Walt Disney
I wonder if the swallows were inspired by a poem by Gustavo Adolfo Becquer (1836-1870):
Volverán las oscuras golondrinas
en tu balcón sus nidos a colgar,
y, otra vez, con el ala a sus cristales
pero aquéllas que el vuelo refrenaban
tu hermosura y mi dicha al contemplar,
aquéllas que aprendieron nuestros nombres...
ésas... ¡no volverán!
The dark swallows will return
to hang their nests in your balcony
and playing, they will knock on your glass windows
with their wings one more time;
but those that delayed their flight
to contemplate your beauty and my joy,
those that learned our names...
those won't return!