Maart 1991
| jaar | 1991 | ||
| t.p.=terplaatse, ov=overvliegend | |||
| Berkheide | |||
| t.p. | ov. | ||
| 70 | Dodaars | 3 | |
| 90 | Fuut | 39 | |
| 720 | Aalscholver | 5 | |
| 1220 | Blauwe Reiger | 10 | 3 |
| 1520 | Knobbelzwaan | 4 | |
| 1540 | Wilde Zwaan | 1 | |
| 1610 | Grauwe Gans | 90 | |
| 1700 | Nijlgans | 15 | |
| 1730 | Bergeend | 31 | |
| 1790 | Smient | 9 | |
| 1820 | Krakeend | 82 | |
| 1840 | Wintertaling | 62 | |
| 1860 | Wilde Eend | 121 | |
| 1940 | Slobeend | 20 | |
| 1980 | Tafeleend | 39 | |
| 2030 | Kuifeend | 196 | |
| 2040 | Toppereend | 1 | |
| 2200 | Nonnetje | 2 | |
| 2690 | Sperwer | 2 | |
| 3040 | Torenvalk | 4 | |
| 3090 | Smelleken | 1 | |
| 3670 | Patrijs | 2 | |
| 3940 | Fazant | 14 | |
| Berkheide | |||
| t.p. | ov. | ||
| 4240 | Waterhoen | 60 | |
| 4290 | Meerkoet | 316 | |
| 4500 | Scholekster | 7 | 2 |
| 4930 | Kievit | 2 | |
| 5190 | Watersnip | 1 | 5 |
| 5290 | Houtsnip | 1 | |
| 5320 | Grutto | 1 | |
| 5410 | Wulp | 11 | 2 |
| 5460 | Tureluur | 2 | |
| 5820 | Kokmeeuw | 81 | |
| 5900 | Stormmeeuw | 40 | |
| 5920 | Zilvermeeuw | 13 | |
| 6000 | Grote Mantelmeeuw | 6 | |
| 6680 | Holenduif | 2 | 1 |
| 6700 | Houtduif | 172 | |
| 6840 | Turkse Tortel | 2 | |
| 7680 | Velduil | 1 | |
| 8310 | Ijsvogel | 1 | |
| 8560 | Groene Specht | 18 | |
| 8760 | Grote Bonte Specht | 9 | |
| 9760 | Veldleeuwerik | 5 | |
| 10110 | Graspieper | 54 | 15 |
| 10190 | Grote Gele Kwikstaart | 1 | |
| 10200 | Witte Kwikstaart | 3 | 4 |
| 10660 | Winterkoning | 62 | |
| 10840 | Heggenmus | 158 | |
| Berkheide | |||
| t.p. | ov. | ||
| 10990 | Roodborst | 56 | |
| 11390 | Roodborsttapuit | 19 | |
| 11460 | Tapuit | 1 | |
| 11870 | Merel | 86 | |
| 11980 | Kramsvogel | 20 | |
| 12000 | Zanglijster | 29 | |
| 12010 | Koperwiek | 8 | 15 |
| 13110 | Tjiftjaf | 10 | |
| 13140 | Goudhaan | 18 | |
| 14370 | Staartmees | 14 | |
| 14400 | Glanskop | 2 | |
| 14620 | Pimpelmees | 54 | |
| 14640 | Koolmees | 164 | |
| 14790 | Boomklever | 2 | |
| 14890 | Boomkruiper | 5 | |
| 15390 | Gaai | 35 | |
| 15490 | Ekster | 161 | |
| 15600 | Kauw | 193 | 3 |
| 15671 | Zwarte Kraai | 49 | 3 |
| 15820 | Spreeuw | 36 | 130 |
| 15910 | Huismus | 103 | |
| 15980 | Ringmus | 12 | |
| 16360 | Vink | 6 | 20 |
| 16380 | Keep | 1 | |
| 16490 | Groenling | 10 | 3 |
| 16530 | Putter | 5 | 1 |
| 16540 | Sijs | 7 | 55 |
| 16600 | Kneu | 19 | 5 |
| 16620 | Frater | 3 | |
| 16660 | Kruisbek | 1 | |
| 18770 | Rietgors | 35 | |
Februari 1991
| jaar | 1991 | ||
| t.p.=terplaatse, ov=overvliegend | |||
| Berkheide | |||
| t.p. | ov. | ||
| 70 | Dodaars | 5 | |
| 90 | Fuut | 1 | |
| 720 | Aalscholver | 2 | 4 |
| 950 | Roerdomp | 2 | |
| 1220 | Blauwe Reiger | 8 | 1 |
| 1520 | Knobbelzwaan | 2 | |
| 1540 | Wilde Zwaan | 5 | |
| 1610 | Grauwe Gans | 30 | |
| 1700 | Nijlgans | 2 | |
| 1730 | Bergeend | 14 | |
| 1820 | Krakeend | 36 | |
| 1840 | Wintertaling | 140 | |
| 1860 | Wilde Eend | 132 | |
| 1940 | Slobeend | 3 | |
| 1980 | Tafeleend | 36 | |
| 2030 | Kuifeend | 27 | |
| 2040 | Toppereend | 1 | |
| 2180 | Brilduiker | 5 | |
| 2200 | Nonnetje | 20 | |
| 2230 | Grote Zaagbek | 6 | |
| 2610 | Blauwe Kiekedief | 2 | |
| 2690 | Sperwer | 3 | |
| 2870 | Buizerd | 2 | |
| 3040 | Torenvalk | 2 | |
| 3940 | Fazant | 11 | |
| Berkheide | |||
| t.p. | ov. | ||
| 4070 | Waterral | 8 | |
| 4240 | Waterhoen | 89 | |
| 4290 | Meerkoet | 342 | |
| 5190 | Watersnip | 4 | |
| 5290 | Houtsnip | 4 | |
| 5320 | Grutto | 1 | |
| 5410 | Wulp | 2 | |
| 5530 | Witgat | 2 | |
| 5820 | Kokmeeuw | 1000 | |
| 5920 | Zilvermeeuw | 1500 | |
| 6680 | Holenduif | 15 | |
| 6700 | Houtduif | 39 | 30 |
| 6840 | Turkse Tortel | 1 | 2 |
| 8560 | Groene Specht | 10 | |
| 8760 | Grote Bonte Specht | 8 | |
| 9760 | Veldleeuwerik | 1 | |
| 10110 | Graspieper | 6 | |
| 10190 | Grote Gele Kwikstaart | 41 | 9 |
| 10200 | Witte Kwikstaart | 1 | |
| 10660 | Winterkoning | 42 | |
| 10840 | Heggenmus | 52 | |
| 10990 | Roodborst | 3 | |
| 11870 | Merel | 127 | |
| 11980 | Kramsvogel | 175 | |
| 12000 | Zanglijster | 17 | |
| 12010 | Koperwiek | 13 | |
| Berkheide | |||
| t.p. | ov. | ||
| 13140 | Goudhaan | 8 | |
| 14370 | Staartmees | 5 | |
| 14400 | Glanskop | 8 | |
| 14420 | Matkop | 2 | |
| 14620 | Pimpelmees | 87 | |
| 14640 | Koolmees | 161 | |
| 14790 | Boomklever | 3 | |
| 14890 | Boomkruiper | 8 | |
| 15390 | Gaai | 11 | |
| 15490 | Ekster | 134 | |
| 15600 | Kauw | 102 | 20 |
| 15671 | Zwarte Kraai | 16 | |
| 15820 | Spreeuw | 12 | |
| 15910 | Huismus | 75 | |
| 15980 | Ringmus | 4 | |
| 16380 | Keep | 18 | 13 |
| 16490 | Groenling | 1 | 4 |
| 16530 | Putter | 8 | |
| 16540 | Sijs | 17 | |
| 16660 | Kruisbek | 2 | |
| 17100 | Goudvink | 3 | |
| 70140 | Eekhoorn | 2 | |
| 70400 | Vos | 4 | |
Januari 1991
| jaar | 1991 | ||
| t.p.=terplaatse, ov=overvliegend | |||
| Berkheide | |||
| t.p. | ov. | ||
| 20 | Roodkeelduiker | 1 | |
| 70 | Dodaars | 7 | |
| 90 | Fuut | 15 | |
| 720 | Aalscholver | 84 | 4 |
| 950 | Roerdomp | 2 | |
| 1220 | Blauwe Reiger | 13 | 1 |
| 1520 | Knobbelzwaan | 2 | 5 |
| 1530 | Kleine Zwaan | 2 | |
| 1730 | Bergeend | 13 | |
| 1820 | Krakeend | 56 | |
| 1840 | Wintertaling | 190 | |
| 1860 | Wilde Eend | 105 | |
| 1940 | Slobeend | 6 | |
| 1980 | Tafeleend | 104 | |
| 2030 | Kuifeend | 165 | |
| 2230 | Grote Zaagbek | 6 | |
| 2690 | Sperwer | 5 | |
| 2870 | Buizerd | 1 | |
| 3040 | Torenvalk | 6 | |
| 3940 | Fazant | 6 | |
| 4070 | Waterral | 6 | |
| 4240 | Waterhoen | 94 | |
| 4290 | Meerkoet | 303 | |
| 5180 | Bokje | 1 | |
| 5190 | Watersnip | 8 | 1 |
| 5290 | Houtsnip | 2 | |
| 5410 | Wulp | 1 | |
| Berkheide | |||
| t.p. | ov. | ||
| 5820 | Kokmeeuw | 6 | |
| 5920 | Zilvermeeuw | 2 | |
| 6680 | Holenduif | 6 | 2 |
| 6700 | Houtduif | 212 | 200 |
| 8560 | Groene Specht | 9 | |
| 8760 | Grote Bonte Specht | 2 | |
| 10110 | Graspieper | 8 | |
| 10190 | Grote Gele Kwikstaart | 1 | |
| 10660 | Winterkoning | 63 | |
| 10840 | Heggenmus | 58 | |
| 10990 | Roodborst | 19 | |
| 11870 | Merel | 87 | |
| 11980 | Kramsvogel | 100 | |
| 12000 | Zanglijster | 4 | |
| 12010 | Koperwiek | 14 | |
| 13110 | Tjiftjaf | 1 | |
| 13140 | Goudhaan | 13 | |
| 13640 | Baardman | 3 | |
| 14370 | Staartmees | 12 | |
| 14400 | Glanskop | 9 | |
| 14620 | Pimpelmees | 83 | |
| 14640 | Koolmees | 109 | |
| 14790 | Boomklever | 2 | |
| 14890 | Boomkruiper | 10 | |
| Berkheide | |||
| t.p. | ov. | ||
| 15390 | Gaai | 10 | |
| 15490 | Ekster | 146 | |
| 15600 | Kauw | 108 | |
| 15671 | Zwarte Kraai | 29 | |
| 15820 | Spreeuw | 11 | |
| 15910 | Huismus | 90 | |
| 15980 | Ringmus | 7 | |
| 16360 | Vink | 31 | |
| 16380 | Keep | 1 | |
| 16490 | Groenling | 5 | |
| 16530 | Putter | 7 | |
| 16540 | Sijs | 3 | 7 |
| 16630 | Barmsijs | 1 | |
| 16660 | Kruisbek | 1 | |
| 17100 | Goudvink | 3 | |
| 18770 | Rietgors | 1 | |
| 70140 | Eekhoorn | 2 | |
December 1990
| jaar | 1990 | ||
| t.p.=terplaatse, ov=overvliegend | |||
| Berkheide | |||
| t.p. | ov. | ||
| 70 | Dodaars | 4 | |
| 90 | Fuut | 8 | |
| 720 | Aalscholver | 5 | 5 |
| 950 | Roerdomp | 3 | |
| 1220 | Blauwe Reiger | 11 | |
| 1700 | Nijlgans | 2 | |
| 1820 | Krakeend | 96 | |
| 1840 | Wintertaling | 157 | |
| 1860 | Wilde Eend | 88 | |
| 1940 | Slobeend | 4 | |
| 1980 | Tafeleend | 54 | |
| 2030 | Kuifeend | 45 | |
| 2180 | Brilduiker | 3 | |
| 2200 | Nonnetje | 2 | |
| 2610 | Blauwe Kiekedief | 1 | |
| 2690 | Sperwer | 2 | |
| 2870 | Buizerd | 3 | |
| 3040 | Torenvalk | 4 | |
| 3940 | Fazant | 11 | |
| 4070 | Waterral | 14 | |
| 4240 | Waterhoen | 95 | |
| 4290 | Meerkoet | 324 | |
| 5180 | Bokje | 1 | |
| 5190 | Watersnip | 12 | |
| 5290 | Houtsnip | 3 | |
| 5530 | Witgat | 1 | |
| Berkheide | |||
| t.p. | ov. | ||
| 5820 | Kokmeeuw | 2 | |
| 6700 | Houtduif | 105 | 110 |
| 6840 | Turkse Tortel | 1 | |
| 7670 | Ransuil | 4 | |
| 8310 | Ijsvogel | 1 | |
| 8560 | Groene Specht | 14 | |
| 8760 | Grote Bonte Specht | 6 | |
| 10110 | Graspieper | 6 | |
| 10143 | Oeverpieper | 2 | |
| 10190 | Grote Gele Kwikstaart | 1 | |
| 10660 | Winterkoning | 70 | |
| 10840 | Heggenmus | 44 | |
| 10990 | Roodborst | 45 | |
| 11870 | Merel | 203 | |
| 11980 | Kramsvogel | 293 | |
| 12000 | Zanglijster | 7 | |
| 12010 | Koperwiek | 30 | |
| 13140 | Goudhaan | 46 | |
| 14370 | Staartmees | 24 | |
| 14400 | Glanskop | 7 | |
| 14620 | Pimpelmees | 62 | |
| 14640 | Koolmees | 106 | |
| 14790 | Boomklever | 1 | |
| 14890 | Boomkruiper | 9 | |
| 15390 | Gaai | 13 | |
| 15490 | Ekster | 131 | |
| 15600 | Kauw | 89 | |
| 15671 | Zwarte Kraai | 31 | |
| Berkheide | |||
| t.p. | ov. | ||
| 15820 | Spreeuw | 18 | |
| 15910 | Huismus | 63 | |
| 15980 | Ringmus | 4 | |
| 16360 | Vink | 58 | |
| 16380 | Keep | 1 | |
| 16490 | Groenling | 23 | |
| 16530 | Putter | 20 | |
| 16540 | Sijs | 2 | |
| 16600 | Kneu | 6 | |
| 16630 | Barmsijs | 1 | 1 |
| 17100 | Goudvink | 6 | |
| 18770 | Rietgors | 8 | |
| 70300 | Ree | 1 | |
| 70400 | Vos | 6 | |
November 1990
| jaar | 1990 | ||
| t.p.=terplaatse, ov=overvliegend | |||
| Berkheide | |||
| t.p. | ov. | ||
| 70 | Dodaars | 1 | |
| 720 | Aalscholver | 9 | |
| 1220 | Blauwe Reiger | 15 | |
| 1520 | Knobbelzwaan | 2 | |
| 1820 | Krakeend | 106 | |
| 1840 | Wintertaling | 69 | |
| 1860 | Wilde Eend | 23 | |
| 1940 | Slobeend | 14 | |
| 1980 | Tafeleend | 1 | |
| 2030 | Kuifeend | 81 | |
| 2180 | Brilduiker | 3 | |
| 2690 | Sperwer | 2 | |
| 3040 | Torenvalk | 3 | |
| 3940 | Fazant | 6 | |
| 4240 | Waterhoen | 39 | |
| 4290 | Meerkoet | 116 | |
| 5190 | Watersnip | 3 | |
| 5820 | Kokmeeuw | 1 | |
| 6000 | Grote Mantelmeeuw | 1 | |
| 6680 | Holenduif | 3 | |
| 6700 | Houtduif | 27 | |
| 8560 | Groene Specht | 4 | |
| 10110 | Graspieper | 4 | |
| 10660 | Winterkoning | 22 | |
| 10840 | Heggenmus | 14 | |
| 10990 | Roodborst | 21 | |
| Berkheide | |||
| t.p. | ov. | ||
| 11870 | Merel | 31 | |
| 11980 | Kramsvogel | 119 | |
| 12000 | Zanglijster | 2 | |
| 12010 | Koperwiek | 2 | |
| 13140 | Goudhaan | 14 | |
| 14620 | Pimpelmees | 18 | |
| 14640 | Koolmees | 26 | |
| 15390 | Gaai | 12 | |
| 15490 | Ekster | 63 | |
| 15600 | Kauw | 47 | |
| 15671 | Zwarte Kraai | 20 | |
| 15820 | Spreeuw | 48 | |
| 15910 | Huismus | 24 | |
| 15980 | Ringmus | 5 | |
| 16360 | Vink | 14 | |
| 16490 | Groenling | 5 | |
| 16530 | Putter | 5 | |
| 18500 | Sneeuwgors | 2 | |
Oktober 1990
| jaar | 1990 | ||
| t.p.=terplaatse, ov=overvliegend | |||
| Berkheide | |||
| t.p. | ov. | ||
| 70 | Dodaars | 9 | |
| 90 | Fuut | 16 | |
| 720 | Aalscholver | 10 | 88 |
| 950 | Roerdomp | 2 | |
| 1220 | Blauwe Reiger | 30 | |
| 1520 | Knobbelzwaan | 7 | |
| 1680 | Rotgans | 14 | |
| 1700 | Nijlgans | 4 | |
| 1790 | Smient | 2 | |
| 1820 | Krakeend | 108 | |
| 1840 | Wintertaling | 192 | |
| 1860 | Wilde Eend | 130 | |
| 1890 | Pijlstaart | 1 | |
| 1940 | Slobeend | 58 | |
| 1980 | Tafeleend | 80 | |
| 2030 | Kuifeend | 120 | |
| 2610 | Blauwe Kiekedief | 1 | |
| 2690 | Sperwer | 9 | 5 |
| 2870 | Buizerd | 1 | |
| 3040 | Torenvalk | 6 | |
| 3670 | Patrijs | 7 | |
| 3940 | Fazant | 18 | |
| Berkheide | |||
| t.p. | ov. | ||
| 4070 | Waterral | 7 | |
| 4240 | Waterhoen | 49 | |
| 4290 | Meerkoet | 332 | |
| 4500 | Scholekster | 1 | |
| 4850 | Goudplevier | 1 | |
| 4930 | Kievit | 40 | |
| 5180 | Bokje | 1 | |
| 5190 | Watersnip | 34 | |
| 5290 | Houtsnip | 2 | |
| 5340 | Rosse Grutto | 1 | |
| 5410 | Wulp | 1 | |
| 5530 | Witgat | 7 | |
| 5560 | Oeverloper | 1 | |
| 5820 | Kokmeeuw | 11 | |
| 5910 | Kleine Mantelmeeuw | 1 | |
| 5920 | Zilvermeeuw | 6 | |
| 6000 | Grote Mantelmeeuw | 4 | |
| 6680 | Holenduif | 16 | |
| 6700 | Houtduif | 79 | 100 |
| 7670 | Ransuil | 1 | |
| 8310 | Ijsvogel | 3 | |
| 8560 | Groene Specht | 25 | |
| 8760 | Grote Bonte Specht | 8 | 1 |
| 9740 | Boomleeuwerik | 1 | |
| 9760 | Veldleeuwerik | 2 | 300 |
| 10110 | Graspieper | 39 | 400 |
| 10190 | Grote Gele Kwikstaart | 2 | 3 |
| 10200 | Witte Kwikstaart | 8 | |
| 10660 | Winterkoning | 156 | |
| 10840 | Heggenmus | 173 | |
| 10990 | Roodborst | 244 | |
| 11390 | Roodborsttapuit | 3 | |
| Berkheide | |||
| t.p. | ov. | ||
| 11870 | Merel | 275 | |
| 11980 | Kramsvogel | 437 | 60 |
| 12000 | Zanglijster | 141 | |
| 12010 | Koperwiek | 120 | 750 |
| 12020 | Grote Lijster | 10 | |
| 12510 | Kleine Karekiet | 1 | |
| 12770 | Zwartkop | 7 | |
| 13110 | Tjiftjaf | 5 | |
| 13120 | Fitis | 2 | |
| 13140 | Goudhaan | 195 | |
| 13150 | Vuurgoudhaan | 4 | |
| 14370 | Staartmees | 22 | |
| 14400 | Glanskop | 1 | |
| 14610 | Zwarte Mees | 1 | |
| 14620 | Pimpelmees | 116 | |
| 14640 | Koolmees | 184 | |
| 14790 | Boomklever | 2 | |
| 14890 | Boomkruiper | 19 | |
| 15390 | Gaai | 38 | |
| 15490 | Ekster | 184 | |
| 15600 | Kauw | 106 | 260 |
| 15630 | Roek | 1 | |
| 15671 | Zwarte Kraai | 71 | |
| Berkheide | |||
| t.p. | ov. | ||
| 15820 | Spreeuw | 2065 | 5000 |
| 15910 | Huismus | 80 | |
| 15980 | Ringmus | 345 | |
| 16360 | Vink | 148 | 2000 |
| 16380 | Keep | 9 | 35 |
| 16490 | Groenling | 37 | |
| 16530 | Putter | 4 | 6 |
| 16540 | Sijs | 90 | |
| 16600 | Kneu | 77 | 40 |
| 16630 | Barmsijs | 2 | 10 |
| 16660 | Kruisbek | 25 | 40 |
| 18470 | Ijsgors | 2 | |
| 18770 | Rietgors | 18 | 10 |
| 70240 | Konijn | 1 | |
?