TY - JOUR T1 - Bird imbalance JO - Nature UR - https://doi.org/10.1038/371455b0 PY - 1994/09/01 AU - Maltby L ED - DO - DOI: 10.1038/371455b0 PB - Springer Science and Business Media LLC VL - 371 IS - 6496 SP - 455 EP - 456 Y2 - 2025/11/07 ER -