Whittam 1980

http://www.life.uiuc.edu/paige/hybrids.html

Whittam 1980

Whittam 1980

Whittam 1980

Whittam 1980

Werner and Hall 1988

Werner and Hall 1988

Werner and Hall 1988

Werner and Hall 1988

Figure 8.10 The trade-off between development of locomotory muscles and reproductive equipment

Figure 8.12 Distances dispersed by male and female Belding’s ground squirrels

Figure 8.13 Inbreeding depression in oldfield mice may result in the failure of inbred females to reproduce as early as outbred females

Figure 8.14 Male and female lions differ in their dispersal patterns

Figure 8.16 Short-range migration in the three-wattled bellbird

Levey and Stiles 1992

Levey and Stiles 1992

Figure 8.17 The geographic distribution of Catharus thrushes, a genus that contains both resident and migratory species

http://fireflyforest.net/images/firefly/2007/June/Catharus-frantzii.jpg

Outlaw et al. 2003

Figure 8.18 The long-distance migratory trait overlain on the phylogeny of Catharus thrushes

Outlaw et al. 2003

Figure 8.25 The leapfrog migratory pattern of western North American populations of the fox sparrow

Bell, 1997 fuliginosa

http://thebirdguide.com/fox/fosp_01.jpg

Bell, 1997

Figure 8.26 Energetic costs of territoriality

Figure 8.28 Habitat quality and the date of departure from Jamaican wintering grounds by American redstarts

Figure 8.29 Redstart habitat selection on the wintering grounds affects reproductive success

Figure 8.30 Does the resident always win?

Figure 8.31 Territorial male red-shouldered widowbirds have higher resource-holding power than nonterritorial floaters

Figure 8.32 Fat reserves determine the winner of territorial conflicts in black-winged damselflies

Plaistow and Tsubaki 2000

Plaistow and Tsubaki 2000

http://nee.kus.hokkyodai.ac.jp/tombo/costalis.jpeg

http://www17.ocn.ne.jp/~kurasina/ookawa_m3.jpg

Plaistow and Tsubaki 2000

Figure 8.33 Older males fight harder in the eggfly butterfly

Figure 9.35 Deep croaks deter rivals

Figure 9.36 Vocal signals of the barking gecko convey information about the size of the calling lizard to distant rivals

Figure 9.37 Honest signals about body size? (Part 1)

Figure 9.37 Honest signals about body size? (Part 2)

Figure 9.38 Threat displays are energetically demanding in the side-blotched lizard

Figure 9.39 A dishonest signal of strength?