Looking for a translation: "to band"
Thanks to everyone for all the help so far! We are looking for a translation for "to band," as in, "He went to a park north of the city "to band" as many birds as possible.
4 Answers
Many thanks for the great answers! We are creating captions for a documentary on bird migration, so have some interesting challenges that come up. All the help is greatly appreciated. kse
From a wiki article:
Anillamiento de aves
El anillamiento es una ayuda para el estudio de aves salvajes, añadiéndoles un pequeño anillo numerado de metal o plástico a sus patas o alas, de forma que distintos aspectos de la vida del ave se pueden estudiar gracias a la posibilidad de reencontrar al mismo individuo.
I think a helpful clue might be that that this is called bird ringing as well as bird banding. Anillar seems to be the verb. (at least in this article on ringing/banding pigeons.)

anillar.
tr. Dar forma de anillo.
tr. Sujetar con anillos.
tr. Dicho de un cuchillero: Hacer o formar anillos en las piezas que fabrica.
4. tr. Marcar con anillas, especialmente a las aves.
- tr. Ceñir o rodear algo. Anillar el cabello.
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Band together?Fue al parque al norte de la ciudad para juntar tantos pájaros como le fuera posible I don't have another idea of this.