Table 5.2. Rankings of invertebrate taxa based on the number of bird species for which they are important (>5% of the animal component of the diet). Invertebrates are ranked from highest (1) to lowest importance. Insect life stages eaten: A = adults, L = larvae, P = pupae, N = nymphs, E = eggs.
ADULTS – BREEDING SEASON
| Rank |
Class
|
Order
|
Stage eaten
|
All bird species
|
Red List species
|
Amber List species
|
1
|
Insecta
|
Coleoptera
|
A
|
9
|
5
|
2
|
2
|
Insecta
|
Hemiptera
|
A
|
6
|
2
|
1
|
3
|
Insecta
|
Lepidoptera
|
L/P
|
6
|
2
|
0
|
4
|
Insecta
|
Diptera
|
A
|
5
|
4
|
1
|
5
|
Insecta
|
Lepidoptera
|
A
|
5
|
4
|
0
|
6
|
Arachnida
|
Araneae/Opiliones
|
|
5
|
4
|
0
|
7
|
Insecta
|
Hymenoptera 1
|
A
|
5
|
3
|
1
|
8
|
Insecta
|
Diptera
|
L/P
|
3
|
0
|
1
|
9
|
Clitellata
|
Lumbricidae 2
|
|
2
|
1
|
0
|
10
|
Insecta
|
Coleoptera
|
L/P
|
2
|
1
|
0
|
11
|
Insecta
|
Coleoptera
|
E
|
1
|
1
|
0
|
12
|
Insecta
|
Collembola
|
A
|
1
|
1
|
0
|
13
|
Insecta
|
Hemiptera
|
L
|
1
|
1
|
0
|
14
|
Insecta
|
Isopoda
|
|
1
|
1
|
0
|
15
|
Insecta
|
Hymenoptera 6
|
P
|
1
|
1
|
0
|
16
|
Insecta
|
Symphyta 3
|
A/L
|
1
|
1
|
0
|
17
|
Insecta
|
Orthoptera
|
|
1
|
1
|
0
|
18
|
Chilopoda/Diplopoda 4
|
|
|
1
|
0
|
1
|
19
|
Insecta
|
Dermaptera
|
L
|
1
|
0
|
1
|
20
|
Insecta
|
Trichoptera
|
|
1
|
0
|
0
|
|
ADULTS – NON-BREEDING SEASON
|
1
|
Insecta
|
Coleoptera
|
A
|
4
|
2
|
1
|
2
|
Insecta
|
Hemiptera
|
A
|
2
|
2
|
0
|
3
|
Insecta
|
Lepidoptera
|
L/P
|
2
|
1
|
0
|
4
|
Clitellata
|
Lumbricidae 2
|
|
2
|
0
|
1
|
5
|
Insecta
|
Coleoptera
|
L/P
|
2
|
0
|
1
|
6
|
Insecta
|
Diptera
|
L/P
|
2
|
0
|
1
|
7
|
Insecta
|
Diptera
|
A
|
1
|
1
|
0
|
8
|
Insecta
|
Symphyta 3
|
L
|
1
|
1
|
0
|
9
|
Insecta
|
Hymenoptera 1
|
P
|
1
|
1
|
0
|
10
|
Insecta
|
Orthoptera
|
|
1
|
1
|
0
|
11
|
Gastropoda
|
Pulmonata
|
A
|
1
|
1
|
0
|
CHICKS – BREEDING SEASON
|
1
|
Insecta
|
Diptera
|
A
|
14
|
10
|
2
|
2
|
Insecta
|
Coleoptera
|
A
|
14
|
10
|
1
|
3
|
Arachnida
|
Araneae/Opiliones
|
|
11
|
9
|
1
|
4
|
Insecta
|
Lepidoptera
|
L/P
|
10
|
9
|
0
|
5
|
Insecta
|
Hemiptera
|
A
|
9
|
6
|
1
|
6
|
Insecta
|
Lepidoptera
|
A
|
7
|
6
|
0
|
7
|
Insecta
|
Diptera
|
L/P
|
7
|
4
|
1
|
8
|
Insecta
|
Hymenoptera 1
|
|
6
|
4
|
1
|
9
|
Insecta
|
Orthoptera
|
|
5
|
4
|
0
|
10
|
Insecta
|
Symphyta 3
|
L
|
5
|
4
|
0
|
11
|
Insecta
|
Coleoptera
|
L/P
|
5
|
3
|
1
|
12
|
Clitellata
|
Lumbricidae 2
|
|
4
|
2
|
1
|
13
|
Insecta
|
Isopoda
|
|
2
|
2
|
0
|
14
|
Insecta
|
Dermaptera
|
L
|
2
|
2
|
0
|
15
|
Crustacea
|
Amphipoda
|
|
2
|
1
|
1
|
16
|
Insecta
|
Collembola
|
|
2
|
1
|
0
|
17
|
Insecta
|
Ephemeroptera
|
A
|
2
|
0
|
1
|
18
|
Gastropoda
|
Stylommatophora 5
|
|
2
|
0
|
1
|
19
|
Chilopoda/Diplopoda 4
|
|
|
1
|
1
|
0
|
20
|
Insecta
|
Ephemeroptera
|
L
|
1
|
1
|
0
|
21
|
Insecta
|
Hemiptera
|
L
|
1
|
1
|
0
|
22
|
Insecta
|
Mantodea
|
|
1
|
1
|
0
|
23
|
Insecta
|
Neuroptera
|
L
|
1
|
1
|
0
|
24
|
Insecta
|
Odonata
|
|
1
|
1
|
0
|
25
|
Insecta
|
Plecoptera
|
N
|
1
|
1
|
0
|
26
|
Crustacea
|
Cladocera
|
N
|
1
|
0
|
1
|
27
|
Polychaeta
|
Errantia
|
|
1
|
0
|
1
|
28
|
Insecta
|
Trichoptera
|
A
|
1
|
0
|
0
|
1 includes Formicidae (ants) but not Symphyta (sawflies)
2 Family Lumbricidae (earthworms) is in the sub-class Oligochaeta
3 Sub-order Symphyta is in the Hymenoptera
4 millipedes (Diplopoda) and centipedes (Chilopoda)
5 snails and slugs
6 Family Formicidae only
|
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