TY - JOUR T1 - Effects of crop type and aerial invertebrate abundance on foraging barn swallows Hirundo rustica JO - AGR ECOSYST ENVIRON PY - 2007/10/01 AU - Evans KL AU - Wilson JD AU - Bradbury RB ED - DO - DOI: 10.1016/j.agee.2007.01.015 VL - 122 IS - 2 SP - 267 EP - 273 Y2 - 2025/07/27 ER -