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| Species_and_authority | Common_name | Total_length_(cm) | Body_length_(cm) | Wing_span_(cm) | M:_tail_mean_(mm) | M:_tail_range_(mm) | F:_tail_mean_(mm) | F:_tail_range_(mm) | MF:_tail_mean_(mm) | MF:_tail_range_(mm) | M:_wing_mean_(mm) | M:_wing_range_(mm) | F:_wing_mean_(mm) | F:_wing_range_(mm) | MF:_wing_mean_(mm) | MF:_wing_range_(mm) | M:_bill_mean_(mm) | M:_bill_range_(mm) | F:_bill_mean_(mm) | F:_bill_range_(mm) | MF:_bill_mean_(mm) | MF:_bill_range_(mm) | M:_tarsus_mean_(mm) | M:_tarsus_range_(mm) | F:_tarsus_mean_(mm) | F:_tarsus_range_(mm) | MF:_tarsus_mean_(mm) | MF:_tarsus_range_(mm) | M:_toe_mean_(mm) | M:_toe_range_(mm) | F:_toe_mean_(mm) | F:_toe_range_(mm) | M:_claw_mean_(mm) | M:_claw_range_(mm) | F:_claw_mean_(mm) | F:_claw_range_(mm) | M:_mean_(g) | M:_range_(g) | F:_mean_(g) | F:_range_(g) | MF:_mean_(g) | MF:_range_(g) | Adult_pre-breeding | Adult_post-breeding | Post_juvenile | First_pre-breeding | First_post-breeding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Accipiter gentilis (Linnaeus 1758) | Goshawk | 48-62 | n/k | 135-165 | 223 | 213-229 | 256 | 246-265 | n/a | n/a | 312 | 306-323 | 353 | 336-366 | n/a | n/a | 22.0 | 20.5-23.7 | 25.0 | 22.0-26.1 | n/a | n/a | 74.4 | 72.5-76.0 | 84.0 | 81.0-87.0 | n/a | n/a | 43.1 | 40.5-44.8 | 50.2 | 47.6-52.7 | 27.5 | 25.5-28.9 | 32.5 | 30.1-35.3 | n/k | 517-1110 | n/k | 820-2054 | n/k | n/k | n/k | complete; April/September | complete; in second calendar year, later than adult | n/k | n/k |
| Accipiter nisus (Linnaeus 1758) | Sparrowhawk | 28-38 | n/k | 55-70 | 149 | 143-156 | 180 | 169-184 | n/a | n/a | 203 | 196-212 | 240 | 231-256 | n/a | n/a | 11.4 | 10.5-12.1 | 14.4 | 13.3-15.5 | n/a | n/a | 53.4 | 51.0-55.0 | 61.0 | 59.0-64.0 | n/a | n/a | 32.3 | 30.6-33.9 | 39.0 | 37.5-41.4 | 12.9 | 12.1-13.9 | 15.5 | 14.0-17.8 | 144 | 110-196 | 264 | 185-342 | n/a | n/a | n/k | complete; May/June to September | complete; after May | n/k | n/k |
| Acrocephalus melanopogon (Temminck 1823) | Moustached Warbler | 12-13 | n/k | 15-16.5 | 50.4 | 48-53 | 48.1 | 44-51 | n/a | n/a | 59.3 | 58-62 | 57.3 | 55-59 | n/a | n/a | 8.1 | 7.8-8.6 | 7.9 | 6.9-8.2 | n/a | n/a | 21.2 | 20.2-21.9 | 20.7 | 19.9-21.6 | n/a | n/a | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | n/k | n/k | n/k | n/k | 11.5 | 9-17 | partial; December/March, depending on area | complete; mid-July/November, depending on area | complete; varies | n/k | n/k |
| Acrocephalus paludicola (Vieillot 1817) | Aquatic Warbler | 13 | n/k | 16.5-19.5 | 46.0 | 43-50 | 46.6 | 45-50 | n/a | n/a | 63.1 | 60-66 | 62.7 | 60-66 | n/a | n/a | 13.6 | 12.5-14.6 | 13.7 | 12.9-14.5 | n/a | n/a | 20.7 | 19.9-21.7 | 20.5 | 19.7-21.5 | n/a | n/a | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | 13.1 | 11-15 | 12.5 | 10-15 | n/a | n/a | n/k | n/k | n/k | n/k | n/k |
| Acrocephalus palustris (Bechstein 1798) | Marsh Warbler | 13 | n/k | 18-21 | 51.8 | 48-55 | 51.7 | 48-55 | n/a | n/a | 69.6 | 67-73 | 68.1 | 65-71 | n/a | n/a | 8.6 | 8.0-9.0 | 8.5 | 8.0-9.1 | n/a | n/a | 23.0 | 21.9-24.1 | 22.4 | 21.5-23.3 | n/a | n/a | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | 12.6 | 10.7-18.0 | 11.4 | 10.0-15.5 | n/a | n/a | complete; January/April | partial; July onwards | partial; July/August | n/k | n/k |
| Acrocephalus schoenobaenus (Linnaeus 1758) | Sedge Warbler | 13 | n/k | 17-21 | 47.3 | 44-50 | 46.7 | 44-48 | n/a | n/a | 67.2 | 65-71 | 64.7 | 62-67 | n/a | n/a | 8.0 | 7.5-8.6 | 8.0 | 7.5-8.4 | n/a | n/a | 21.4 | 20.0-22.5 | 20.8 | 20.1-21.7 | n/a | n/a | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | n/k | 10-17.5 | n/k | 9-13.6 | n/k | n/k | partial or absent, depends when previous moult | complete; July/August to September/October | none until reach winter quarters, then complete | n/k | n/k |
| Acrocephalus scirpaceus (Hermann 1804) | Reed Warbler | 13 | n/k | 17-21 | 51.3 | 49-54 | 50.9 | 49-53 | n/a | n/a | 66.8 | 64.0-69.0 | 66.0 | 63.0-69.0 | n/a | n/a | 9.3 | 8.7-9.9 | 9.2 | 8.5-9.7 | n/a | n/a | 23.1 | 21.9-24.3 | 22.8 | 21.4-24.1 | n/a | n/a | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | n/k | 9.0-16.0 | n/k | 9.6-16.0 | n/k | n/k | partial; September/March | partial or complete; mid-July/August and in winter quarters | partial, at 6-7 weeks; complete, 3-4 weeks July/September | n/k | n/k |
| Actitis hypoleucos (Linnaeus 1758) | Common Sandpiper | 19-21 | n/k | 38-41 | 52.5 | 49-56 | 53.5 | 50-58 | n/a | n/a | 112 | 107-116 | 112 | 109-116 | n/a | n/a | 24.6 | 23-27 | 24.5 | 23-27 | n/a | n/a | 24.3 | 23-26 | 24.5 | 23-26 | n/a | n/a | 23.3 | 22-25 | 23.3 | 22-25 | n/a | n/a | n/a | n/a | 52.2 | 38-70 | 51 | 42-67 | n/a | n/a | partial; February/May | complete; in winter quarters, occasionally earlier, June/July to January/February | complete or nearly so; in winter quarters mostly, September/March | like adult, March/April | n/k |
| Actitis macularia (Linnaeus 1766) | Spotted Sandpiper | 18-20 | n/k | 37-40 | 46.1 | 43-49 | 48.7 | 46-52 | n/a | n/a | 105 | 100-112 | 109 | 106-113 | n/a | n/a | 23.2 | 22-25 | 24.1 | 23-26 | n/a | n/a | 23.5 | 22-26 | 24.1 | 23-26 | n/a | n/a | 21.7 | 20-23 | 22.1 | 21-24 | n/a | n/a | n/a | n/a | 35.5 | 19-54 | 26.2 | 27-47 | n/a | n/a | partial; February/April | complete or scattered feathers, suspended in migration; full moult in winter quarters, January/March | complete or partial; in winter quarters, September/October to March/April | partial; March/May | n/k |
| Aegithalos caudatus (Linnaeus 1758) | Long-tailed Tit | 14 | n/k | 16-19 | 84 (rosaceus) | 80-86.5 (rosaceus) | 84.5 (rosaceus) | 80-90 (rosaceus) | 92.4 (caudatus) | 85-97 (caudatus) | 61.6 (rosaceus) | 58-63 (rosaceus); 60-65 (caudatus) | 59.1 (rosaceus) | 57-61.5 (rosaceus); 58-63.5 (caudatus) | n/a | n/a | 4.4 (rosaceus) | 3.9-4.9 (rosaceus) | 4.5 (rosaceus) | 4-4.9 (rosaceus) | n/a | n/a | 17.3 (rosaceus) | 16.8-18.0 (rosaceus); 16-17.5 (caudatus) | 16.9 (rosaceus) | 16.5-17.3 (rosaceus) | n/a | n/a | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | n/k | n/k | n/k | n/k | 8.64 | 7.5-10.1 | n/k | complete; May/October, about 80 days | complete; June/October | n/k | n/k |
| Aix galericulata (Linnaeus 1758) | Mandarin Duck | 41-49 | 28-34 | 68-74 | 101 | 94-111 | 99.3 | 94-104 | n/a | n/a | 235 | 226-242 | 226 | 215-234 | n/a | n/a | 28.6 | 27-31 | 28.2 | 27-30 | n/a | n/a | 38.1 | 36-40 | 36.7 | 35-38 | n/a | n/a | 48.6 | 46-52 | 47 | 45-49 | n/a | n/a | n/a | n/a | 628 | 571-693; up to 725 in semi-captivity | 512 | 428-608 | n/a | n/a | partial; head, body, tertials, August to September/October | complete; May, flightless one month | partial; head, body, tail, August onwards | partial; head, body, tertials, September onwards | n/k |
| Aix sponsa (Linnaeus 1758) | Wood Duck | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k | n/k |
| Alauda arvensis Linnaeus 1758 | Skylark | 18-19 | n/k | 30-36 | 66.2 | 62-70 | 61.5 | 59-64 | n/a | n/a | 114.5 | 108-123 | 104.9 | 99-112 | n/a | n/a | 9.9 | 9.1-11.0 | 9.2 | 8.5-10.0 | n/a | n/a | 24.9 | 23.5-26.7 | 24.0 | 22.6-25.5 | n/a | n/a | n/k | n/k | n/k | n/k | n/a | n/a | n/a | n/a | 42.7 | 32-51 | 37.2 | 29-47 | n/a | n/a | n/k | complete; July/September | complete; 2-4 weeks after fledging, finishes in August/October | n/k | n/k |
| Alca torda Linnaeus 1758 | Razorbill | 37-39 | 31-32 | 63-68 | 75.7 (islandica) | 66-86 (islandica) | 78.4 (islandica) | 76-83 (islandica) | n/a | n/a | 209.7 (torda); 193.6 (islandica) | 201-216 (torda); 187-200 (islandica) | 207.6 (torda); 196.8 (islandica) | 201-216 (torda); 194-200 (islandica) | n/a | n/a | 35.7 (torda); 34.2 (islandica) | 32.0-39.0 (torda); 31.3-38.5 (islandica) | 34.5 (torda); 32.3 (islandica) | 32.0-37.0 (torda); 20.7-33.6 (islandica) | n/a | n/a | 30.7 (islandica) | 28.0-33.2 (islandica) | 29.5 (islandica) | 27.6-31.2 (islandica) | n/a | n/a | 45.3 (islandica) | 44-49 (islandica) | 45.4 (islandica) | 44-47 (islandica) | n/a | n/a | n/a | n/a | 734 (summer), 485 (winter) | 424-890 (summer), 391-645 (winter) | 700 (summer), 453 (winter) | 620-800 (summer), 372-518 (winter) | n/a | n/a | partial; January/April, head and neck, some body | complete; August/October | partial; body and s July to October/November, flight feathers and tail about 5 weeks old | n/k | n/k |
| Alcedo atthis (Linnaeus 1758) | Kingfisher | 16-17 | n/k | 24-26 | 36.5 | 35-39 | 37.1 | 34-40 | n/a | n/a | 78.3 | 76-81 | 78.2 | 76-81 | n/a | n/a | 33.5 | 30-36 | 32.7 | 30-35 | n/a | n/a | 10.2 | 9.4-10.9 | 10.2 | 9.6-11.2 | n/a | n/a | 17.3 | 16-18 | 17.5 | 16-19 | n/a | n/a | n/a | n/a | 39.3 | 34-43 | 39.2 | 34-46 | n/a | n/a | n/k | complete or almost; June/August to October/November | partial; head, body and various numbers of tail feathers, highly variable timing July/August to October, others still juvenile in December | n/k | n/k |
| Alectoris chukar (Gray 1830) | Chukar | 32-34 | n/k | 47-52 | 82.3 | 76-87 | 78.9 | 74-86 | n/a | n/a | 168 | 162-172 | 154 | 148-160 | n/a | n/a | 15.2 | 14-16 | 14.3 | 13-15 | n/a | n/a | 46.8 | 45-48 | 44.1 | 42-46 | n/a | n/a | 47.8 | 45-50 | 44.0 | 42-47 | n/a | n/a | n/a | n/a | 536 | 504-594 | 501 | 462-545 | n/a | n/a | n/k | complete; male June/July, females June/October | complete; highly variable timing, starts at 5 weeks old, up to August/November | n/k | n/k |
| Alectoris rufa (Linnaeus 1758) | Red-legged Partridge | 32-34 | n/k | 47-50 | 93.2 | 87-97 | 84.4 | 77-92 | n/a | n/a | 165 | 161-169 | 157 | 152-161 | n/a | n/a | 13.9 | 13-15 | 13.3 | 12-14 | n/a | n/a | 44.5 | 41-46 | 41.4 | 39-43 | n/a | n/a | 44.8 | 42-48 | 42.3 | 40-45 | n/a | n/a | n/a | n/a | n/k | 480-547 | n/k | 391-514 | n/k | n/k | n/k | complete; late June/mid-November | complete; June/September to mid-August/November except two outer primaries | n/k | n/k |
| Alle alle Linnaeus 1758 | Little Auk | 17-19 | n/k | 40-48 | 32.3 | 27-36 | 32.3 | 29-35 | n/a | n/a | 123.3 | 116-127 | 120.7 | 116-125 | n/a | n/a | 16.1 | 15-17 | 15.5 | 13-17 | n/a | n/a | 20.6 | 19.3-22.0 | 20.2 | 19.0-22.0 | n/a | n/a | 29.0 | 26.7-32.1 | 28.6 | 26.3-29.7 | n/a | n/a | n/a | n/a | n/k | n/k | n/k | n/k | 163 | 134-192 | partial; body December/March | poorly known, complete; body May to September, flight feathers and tail, September/October | body, September/October | first non-breeding moult by November | n/k |
| Alopochen aegyptiacus (Linnaeus 1766) | Egyptian Goose | 63-73 | n/k | 134-154 | 123 | 116-130 | 121 | 111-131 | n/a | n/a | 392 | 378-406 | 375 | 352-390 | n/a | n/a | 49.6 | 46-54 | 47.9 | 43-52 | n/a | n/a | 85.5 | 80-95 | 80.2 | 73-85 | n/a | n/a | 76.9 | 72-82 | 72.4 | 67-76 | n/a | n/a | n/a | n/a | 2500 | n/k | 2040 | n/k | n/k | n/k | n/k | moult of body and tail after breeding | partial; after fledging for a few months | n/k | n/k |
| Anas acuta Linnaeus 1758 | Pintail | 51-66 | 34-44 | 80-95 | 179 | 172-189 | 104 | 95-113 | n/a | n/a | 275 | 267-282 | 260 | 254-267 | n/a | n/a | 50.9 | 47-56 | 46.7 | 44-51 | n/a | n/a | 42.6 | 40-45 | 41.0 | 39-43 | n/a | n/a | 55.4 | 42-59 | 52.9 | 50-57 | n/a | n/a | n/a | n/a | 851 | 680-1150 | 735 | 550-900 | n/a | n/a | like mallard but 2-3 weeks later | like mallard but 2-3 weeks later | n/k | n/k | n/k |