Paper format: A5, A4, Letter and more

---
title: Field Guide to Coastal Birds
page:
  size: A5
  margin: 14mm 13mm 16mm
  header:
    left: "*{title}*"
    right: Pocket edition
  footer:
    left: "`size: A5`"
---

# Field Guide to Coastal Birds

A pocket guide fits a jacket pocket: this page is **A5**, named with one front matter line under `page:`, `size: A5`. Every size below works the same way, by name, without regard to case.

| size: | Size | Typical use |
|:--|:--|:--|
| `A3` | 297 × 420 mm | Posters, drawings |
| `A4` | 210 × 297 mm | Letters, reports (the default) |
| `A5` | 148 × 210 mm | Guides, booklets, notebooks |
| `A6` | 105 × 148 mm | Postcards |
| `B5` | 176 × 250 mm | Books and journals (ISO) |
| `JIS-B5` | 182 × 257 mm | Notebooks in Japan |
| `C5` | 162 × 229 mm | Envelopes for A5 sheets |
| `DL` | 110 × 220 mm | Leaflets, envelopes |
| `Letter` | 8.5 × 11 in | Letters in North America |
| `Legal` | 8.5 × 14 in | Contracts in North America |
| `Tabloid` | 11 × 17 in | Newsletters, drawings |

## Oystercatcher

> [!TIP]
> Black and white, with a long orange bill. Listen for a loud *kleep* along rocky shores at low tide.

- **Length:** 40–45 cm
- **Season:** all year
- **Where:** mudflats, shingle beaches, estuaries

## Ringed plover

A small, round wader with a black collar. It runs, stops, and picks at the sand, then runs again.

- **Length:** 18–20 cm
- **Season:** all year, more birds in winter
- **Where:** sandy beaches above the tide line

## Turnstone

Mottled brown in winter, bright orange and black in summer. True to its name, it flips stones and seaweed to find food.

- **Length:** 22–24 cm
- **Season:** August to May
- **Where:** rocky shores, harbor walls