Table 1 Prey of Little Egrets and Cattle Egrets, determined by abundance (%N) and biomass (%B)
From: Three-dimensional niche partitioning between two colonially nesting ardeid species in central China
Prey types | Little Egrets (n = 5) | Cattle Egrets (n = 17) | ||||||
|---|---|---|---|---|---|---|---|---|
%N | Mean | %B | Weight (g) | %N | Mean | %B | Weight (g) | |
Insecta | ||||||||
 Coleoptera | 5.22 | 1.20 ± 1.20 | 2.28 | 0.18 ± 0.00 | 28.57 | 25.65 ± 4.72 | 29.69 | 0.20 ± 0.02 |
 Coleoptera larvae | 17.39 | 4.00 ± 4.00 | 12.68 | 0.30 ± 0.00 | 9.11 | 8.18 ± 5.73 | 7.84 | 0.19 ± 0.01 |
 Diptera | 14.78 | 3.40 ± 2.93 | 2.64 | 0.09 ± 0.01 | 5.37 | 5.13 ± 3.66 | 3.25 | 0.12 ± 0.00 |
 Diptera larvae | 6.96 | 1.60 ± 1.60 | 1.69 | 0.10 ± 0.00 | 5.90 | 5.63 ± 4.33 | 5.19 | 0.17 ± 0.00 |
 Hemiptera | 1.74 | 0.40 ± 0.40 | 0.85 | 0.20 ± 0.00 | 0.85 | 0.81 ± 0.37 | 1.19 | 0.28 ± 0.02 |
 Odonata |  |  |  |  | 2.03 | 1.94 ± 1.81 | 0.36 | 0.26 ± 0.06 |
 Odonata larvae | 23.48 | 5.40 ± 3.34 | 13.69 | 0.24 ± 0.00 | 8.65 | 8.25 ± 3.28 | 9.90 | 0.23 ± 0.01 |
 Orthoptera |  |  |  |  | 34.21 | 34.80 ± 9.81 | 23.39 | 0.18 ± 0.04 |
Arachnida | ||||||||
 Araneae | 3.48 | 1.66 ± 0.66 | 0.51 | 0.06 ± 0.00 | 2.62 | 2.50 ± 1.09 | 2.62 | 0.07 ± 0.03 |
Branchiopoda | ||||||||
 Triopsidae |  |  |  |  | 1.38 | 1.31 ± 0.63 | 1.46 | 0.19 ± 0.01 |
Crustacea |  |  |  |  | 0.13 | 0.13 ± 0.12 | 0.20 | 0.31 ± 0.00 |
Nematomorpha |  |  |  |  | 0.52 | 0.50 ± 0.48 | 0.05 | 0.02 ± 0.00 |
Aves | ||||||||
 Tree sparrow |  |  |  |  | 0.07 | 0.06 ± 0.06 | 5.10 | 15.52 ± 0.00 |
Amphibian | ||||||||
 Frog |  |  |  |  | 0.59 | 0.53 ± 0.17 | 9.74 | 3.87 ± 0.94 |
Teleostei | ||||||||
 Fish | 26.96 | 6.20 ± 2.22 | 65.66 | 1.02 ± 0.32 |  |  |  |  |
Total | 115 prey items |  |  | 0.40 ± 0.45 | 1526 prey items |  |  | 0.20 ± 0.54 |