Table 4 Biomass ingested and chitin content of different arthropod orders eaten by hummingbirds at our study site
From: True grit: ingestion of small stone particles by hummingbirds in West Mexico
Season | Species | Ingested arthropods | ||
|---|---|---|---|---|
Biomass (g dry mass) | Orders | Chitin content (% dry mass) | ||
Warm-dry | Amethyst-throated Mountaingem | 0.001 | Psocoptera | 13.3 |
White-eared Hummingbird | 0.0019 ± 0.0007 (n = 4) | Araneae, Psocoptera, Diptera | 13.2 ± 0.1 (n = 3) | |
Rivoli’s Hummingbird | 0.0038 | Hemiptera, Hymenoptera, Diptera | 13.6 ± 2.7 (n = 3) | |
Rainy | Mexican Violetear | 0.0007 ± 0.0005 (n = 4) | Hemiptera, Psocoptera, Hymenoptera, Diptera | 13.5 ± 2.2 (n = 4) |
Amethyst-throated Mountaingem | 0.0006 | Hemiptera, Diptera | 12.2 ± 1.5 (n = 2) | |
White-eared Hummingbird | 0.0002 | Diptera | 13.3 | |
Rivoli’s Hummingbird | 0.0001 ± 0.00007 (n = 2) | Unidentifiable | Unknown | |
Cold-dry | Mexican Violetear | 0.0007 ± 0.0005 (n = 6) | Hemiptera, Psocoptera, Hymenoptera, Diptera | 13.5 ± 2.2 (n = 4) |
Amethyst-throated Mountaingem | 0.0006 | Psocoptera | 13.3 | |
White-eared Hummingbird | 0.0005 ± 0.0003 (n = 9) | Psocoptera, Hymenoptera, Diptera | 14.4 ± 1.8 (n = 3) | |
Rivoli’s Hummingbird | 0.0015 ± 0.0008 (n = 8) | Hemiptera, Psocoptera, Hymenoptera, Diptera | 13.5 ± 2.2 (n = 4) | |
Broad-tailed Hummingbird | 0.0007 ± 0.0004 (n = 9) | Hemiptera, Psocoptera, Hymenoptera, Diptera | 13.5 ± 2.2 (n = 4) | |
Rufous Hummingbird | 0.0004 ± 0.0001 (n = 4) | Hemiptera, Psocoptera, Hymenoptera, Diptera | 13.5 ± 2.2 (n = 4) | |