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Results: 4

1.
Figure 1.

Figure 1. From: Sexual imprinting misguides species recognition in a facultative interspecific brood parasite.

Comparison of head profiles of (a) female canvasback, (b) female redhead, (c) male canvasback, and (d) male redhead.

Michael D. Sorenson, et al. Proc Biol Sci. 2010 October 22;277(1697):3079-3085.
2.
Figure 4.

Figure 4. From: Sexual imprinting misguides species recognition in a facultative interspecific brood parasite.

Male courtship preferences as indicated by the proportion of all observed courtship displays directed towards redhead females during focal animal observations and flock watches (50% random expectation indicated by dashed line). Note that (% displays directed to canvasbacks) = 100% − (% displays directed to redheads). Filled triangles, canvasbacks reared with redheads; filled circles, redheads reared with redheads; open triangles, canvasbacks reared with canvasbacks; open circles, redheads reared with canvasbacks.

Michael D. Sorenson, et al. Proc Biol Sci. 2010 October 22;277(1697):3079-3085.
3.
Figure 2.

Figure 2. From: Sexual imprinting misguides species recognition in a facultative interspecific brood parasite.

(a) View from the observer's blind of the arena used for spatial proximity tests of male preferences for stimulus females. (b–d) Examples of courtship behaviours in experimental flocks. (b) Canvasback and redhead males simultaneously following and neck-stretching to a female redhead. (c) Mutual neck stretch by a canvasback pair. (d) Female redhead responding aggressively to a kink-necked call by a male canvasback.

Michael D. Sorenson, et al. Proc Biol Sci. 2010 October 22;277(1697):3079-3085.
4.
Figure 3.

Figure 3. From: Sexual imprinting misguides species recognition in a facultative interspecific brood parasite.

Outcome of spatial proximity trials (50% random expectation indicated by dashed line). Means (±s.e.) of raw values are presented for each treatment group (n = 8 males per group). Note that (% time with canvasbacks) = 100% − (% time spent with redheads). Lines with filled triangles, canvasbacks reared with redheads; lines with filled circles, redheads reared with redheads; lines with open triangles, canvasbacks reared with canvasbacks; lines with open circles, redheads reared with canvasbacks.

Michael D. Sorenson, et al. Proc Biol Sci. 2010 October 22;277(1697):3079-3085.

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