| 000 | 004400000a22001570004500 | ||
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| 090 |
_aAR _b02245 |
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| 245 | 1 | 0 | _aBird activity levels related to weather |
| 650 | 1 | 4 |
_aAvifauna _992441 |
| 650 | 1 | 4 |
_aMigraciones _916308 |
| 650 | 1 | 4 |
_aOrnitología _993189 |
| 651 | 4 |
_pAmérica del Norte _992749 |
|
| 041 | 0 | _aInglés | |
| 100 | 1 |
_aRobbins, Chandler S. _995758 |
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| 942 | _cARTICULO | ||
| 773 | 1 |
_tStudies in Avian Biology _31194 _q301-310 _d1981 _g6 |
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| 999 |
_c11317 _d11317 |
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