How do I solve 1 across in Daily Telegraph Cryptic 31246?

Question

Accepted Answer

1 across reads "Bird, female, going over fence" (7 letters); the answer is SWALLOW. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Bird, female, going over fence (7)

1A — Bird, female, going over fence (7) — SWALLOW