Fake eggs and hematophagous insects used for blood collection of incubating cattle egret adults.

<p>Photograph showing: (A) Side view of fiberglass egg mimicking cattle egret egg (approximate dimensions: 45 mm length, 33 mm width) with holes through which the insect projects its proboscis; (B) Interior view of two halves of egg, which are attached with nut and bolt; (C) Fifth instar <i>Panstrongylus megistus</i> larva being removed from a fake-egg after having fed on an incubating cattle egret. Note the insect's engorged abdomen.