dip out
verb1
Informal To leave a place without informing anyone.
2
Biology, Birdwatching, Natural sciences, Ornithology To miss out on seeing a bird, especially one that is rare or difficult to observe.
- That was how I dipped out on a Tree Pipit! Which, of course, balanced up the stringy Hawfinch, so fair enough.1983, Bill Oddie, Gone Birding, London: Methuen, page 27: