Perhaps include an example in reference to a certain species, and explain why they can't afford more prominent secondary sexual characteristics.

May be helpful to specify if life history strategies vary at individual AND species levels.

This is an example that certainly clarifies subject matter, but could be more helpful/better remembered if it included pictures and was elaborated upon in more detail (i.e. compare/contrast the fishes' strategies).

This phrase was confusing to me. Perhaps an example could be provided of what this means?

Could be helpful to include this abbreviation in parentheses following "life history theory" before using it by itself.

Opportunity to insert a coding exercise?

Image could be formatted more cleanly (i.e. centered on the page and larger).

It would make sense for this section to be included as a case study on one of these ecologist's work, perhaps include pictures of them

See behavioral ecology section for comments regarding key terms.

This section needs to be added (unless I am looking at the wrong place!)

There is great potential for case studies to be included in this section in various places, especially where experiments related to conditioning/learning are touched upon. As it stands, this section is very dense, so perhaps expansion on those experiments is not needed.

Bolding this term and "intrasexual selection" would draw attention to these important concepts. This section is dense and could use the direction.

Describing migration as evolved AND adapted seems a bit redundant to me. Adaptation is a mechanism that can lead to evolution. Perhaps "evolved or adapted"?

Would suggest bolding this, but that only makes sense if key terms were also bolded throughout other chapters in the textbook. Same with the term "taxis".

Another potential key term to be bolded.

I think "disadvantageous" would be more accurate here.

Perhaps this could be bolded as a key term, as could the term "learned behaviors".