Birds of Europe: Part IV (Uncolored proofs)
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- Purple Heron, Héron pourpré plate 32
- Plate depicting: Aquila purpurea (Linnaeus, 1766) -- Purple Heron, Héron pourpré. Alternate name, as printed: Ardea purpurea -- Purple heron
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- Squacco Heron plate 33
- Plate depicting: Ardeola ralloides (Scopoli, 1769) -- Squacco Heron. Alternate name, as printed: Ardea comata
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- Great Egret, Grande Aigrette plate 34
- Plate depicting: Aquila alba (Linnaeus, 1758) -- Great Egret, Grande Aigrette. Alternate name, as printed: Ardea alba -- Great egret
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- Little Egret, Aigrette garzett plate 35
- Plate depicting: Egretta garzetta (Linnaeus, 1766) -- Little Egret, Aigrette garzett. Alternate name, as printed: Ardea garzetta -- Little egret
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- Cattle Egret, , Western Cattle Egret, Garza ganadera, Héron garde-boeufs plate 36
- Plate depicting: Bubulcus ibis (Linnaeus, 1758) -- Cattle Egret, , Western Cattle Egret, Garza ganadera, Héron garde-boeufs. Alternate name, as printed: Ardea russata -- Rufous-backed egret
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- Black-crowned Night Heron, Black-crowned Night-Heron,Bihoreau gris, Pedrete corona negra plate 37
- Plate depicting: Nycticorax nycticorax (Linnaeus, 1758) -- Black-crowned Night Heron, Black-crowned Night-Heron,Bihoreau gris, Pedrete corona negra. Alternate name, as printed: Nycticorax europaeus -- Common night heron